diff --git a/Aircraft/Generic/kap140.nas b/Aircraft/Generic/kap140.nas
index 1b7625568..64bdc17c9 100644
--- a/Aircraft/Generic/kap140.nas
+++ b/Aircraft/Generic/kap140.nas
@@ -95,7 +95,7 @@ var elevatorControl         = propFlightControls.getNode("elevator", 0);
 var elevatorTrimControl     = propFlightControls.getNode("elevator-trim", 0);
 
 var headingNeedleDeflection = "/instrumentation/nav/heading-needle-deflection";
-var gsNeedleDeflection = "/instrumentation/nav/gs-needle-deflection";
+var gsNeedleDeflection = "/instrumentation/nav/gs-needle-deflection-norm";
 var staticPressure = "systems/static/pressure-inhg";
 
 var pressureUnits = { "inHg" : 0, "hPa" : 1 };
@@ -912,19 +912,19 @@ var gsArm = func {
 
   var deviation = getprop(gsNeedleDeflection);
   ##
-  # If the deflection is more than 1 degrees wait 5 seconds and check again.
+  # If the deflection is more than 50% (manual says '2 to 3 dots')
   ##
-  if (abs(deviation) > 1.0)
+  if (abs(deviation) > 0.5)
   {
     #print("deviation");
     settimer(gsArm, 5);
     return;
   }
   ##
-  # If the deviation is less than 1 degrees turn off the GS-ARM annunciator
+  # If the deviation is less than 50% turn off the GS-ARM annunciator
   # and show the GS annunciator. Activate the GS pitch mode.
   ##
-  elsif (abs(deviation) < 1.1)
+  else
   {
     #print("capture");
     annunciatorAlt.setBoolValue(0);
diff --git a/Aircraft/Instruments-3d/kfc200/kfc-200.nas b/Aircraft/Instruments-3d/kfc200/kfc-200.nas
index 683015757..acfdde6ba 100644
--- a/Aircraft/Instruments-3d/kfc200/kfc-200.nas
+++ b/Aircraft/Instruments-3d/kfc200/kfc-200.nas
@@ -39,7 +39,7 @@ var NAVLOC = "/instrumentation/nav/nav-loc";
 var NAVDST = "/instrumentation/nav/nav-dist";
 var NAVRNG = "/instrumentation/nav/in-range";
 var HDEFL = "/instrumentation/nav/heading-needle-deflection";
-var GSDEFL = "/instrumentation/nav/gs-needle-deflection";
+var GSDEFL = "/instrumentation/nav/gs-needle-deflection-norm";
 var BC = "/instrumentation/nav/back-course-btn";
 
 var HDG = props.globals.getNode("/autopilot/locks/heading",1);
@@ -173,7 +173,7 @@ var update_nav = func {
             if(getprop("instrumentation/kfc200/gs-arm")){
                 if(getprop("instrumentation/nav/gs-distance") < 25000){
                     var GS1 = getprop(GSDEFL); 
-                    if( GS1< 1.0 and GS1 > -1.0){vnav = 4;
+                    if( GS1< 0.5 and GS1 > -0.5){vnav = 4;
                     setprop("/instrumentation/kfc200/vnav",vnav);
                     }
                 }
diff --git a/Aircraft/Instruments-3d/kfc200/ki252a.xml b/Aircraft/Instruments-3d/kfc200/ki252a.xml
index 87a851d16..b3985ab60 100644
--- a/Aircraft/Instruments-3d/kfc200/ki252a.xml
+++ b/Aircraft/Instruments-3d/kfc200/ki252a.xml
@@ -91,13 +91,12 @@ Syd Adams
     <animation>
         <type>translate</type>
         <object-name>GSneedle</object-name>
-        <property>instrumentation/nav/gs-needle-deflection</property>
+        <property>instrumentation/nav/gs-needle-deflection-norm</property>
         <interpolation>
-            <entry><ind>-100.0</ind><dep>-0.0085</dep></entry>
-            <entry><ind>-5.0</ind><dep>-0.0085</dep></entry>
+            <entry><ind>-1</ind><dep>-0.0085</dep></entry>
+            <entry><ind>-0.5</ind><dep>-0.0085</dep></entry>
             <entry><ind>0.0</ind><dep>0.0</dep></entry>
-            <entry><ind>10.0</ind><dep>0.0162</dep></entry>
-            <entry><ind>100.0</ind><dep>0.0162</dep></entry>
+            <entry><ind>1.0</ind><dep>0.0162</dep></entry>
         </interpolation>
         <axis>
             <x>0.0</x>
diff --git a/Aircraft/Instruments-3d/ki206/ki206.xml b/Aircraft/Instruments-3d/ki206/ki206.xml
index d28b8a926..5f4495360 100644
--- a/Aircraft/Instruments-3d/ki206/ki206.xml
+++ b/Aircraft/Instruments-3d/ki206/ki206.xml
@@ -111,13 +111,11 @@ Syd Adams
     <animation>
         <type>translate</type>
         <object-name>KI206.gsneedle</object-name>
-        <property>instrumentation/nav/gs-needle-deflection</property>
+        <property>instrumentation/nav/gs-needle-deflection-norm</property>
         <interpolation>
-            <entry><ind>-9999.0</ind><dep>-0.0113</dep></entry>
-            <entry><ind>-10.0</ind><dep>-0.0113</dep></entry>
+            <entry><ind>-1.0</ind><dep>-0.0113</dep></entry>
             <entry><ind>0.0</ind><dep>0.0</dep></entry>
-            <entry><ind>10.0</ind><dep>0.0113</dep></entry>
-            <entry><ind>9999.0</ind><dep>0.0113</dep></entry>
+            <entry><ind>1.0</ind><dep>0.0113</dep></entry>
         </interpolation>
         <axis>
             <x>0.0</x>
diff --git a/Aircraft/Instruments-3d/primus-1000/P1000.nas b/Aircraft/Instruments-3d/primus-1000/P1000.nas
index fe26116e6..ab7067981 100644
--- a/Aircraft/Instruments-3d/primus-1000/P1000.nas
+++ b/Aircraft/Instruments-3d/primus-1000/P1000.nas
@@ -343,9 +343,7 @@ var P1000 = {
                 if(getprop("/instrumentation/nav["~nv~"]/has-gs")){
                     me.NavType.setValue(2);
                     if(nm_calc<30)me.GS_inrange.setValue(1);
-                    var df = getprop("/instrumentation/nav["~nv~"]/gs-needle-deflection");
-                    if(df>10)df=10;
-                    if(df<-10)df=-10;
+                    var df = getprop("/instrumentation/nav["~nv~"]/gs-needle-deflection-norm");
                     me.GS_deflection.setValue(df);
                 }
                 id = getprop("instrumentation/nav["~nv~"]/nav-id");
diff --git a/Aircraft/Instruments-3d/primus-1000/pfd.xml b/Aircraft/Instruments-3d/primus-1000/pfd.xml
index 59d6733bd..2f937658c 100644
--- a/Aircraft/Instruments-3d/primus-1000/pfd.xml
+++ b/Aircraft/Instruments-3d/primus-1000/pfd.xml
@@ -506,28 +506,22 @@ Primus 1000 Primary Flight Display
 <animation>
     <type>translate</type>
     <object-name>GSneedle</object-name>
-    <property>instrumentation/nav/gs-needle-deflection</property>
+    <property>instrumentation/nav/gs-needle-deflection-norm</property>
     <interpolation>
         <entry>
-            <ind>-10.0</ind><dep>-0.0188</dep>
+            <ind>-1.0</ind><dep>-0.0188</dep>
         </entry>
         <entry>
-            <ind>-5.0</ind><dep>-0.0162</dep>
-        </entry>
-        <entry>
-            <ind>-2.5</ind><dep>-0.0083</dep>
+             <ind>-0.5</ind><dep>-0.0162</dep>
         </entry>
         <entry>
             <ind>0.0</ind><dep>0.0</dep>
         </entry>
         <entry>
-            <ind>2.50</ind><dep>0.0078</dep>
+             <ind>0.5</ind><dep>0.0158</dep>
         </entry>
         <entry>
-            <ind>5.0</ind><dep>0.0158</dep>
-        </entry>
-        <entry>
-            <ind>10.0</ind><dep>0.02</dep>
+            <ind>1.0</ind><dep>0.02</dep>
         </entry>
     </interpolation>
     <axis>
diff --git a/Aircraft/Instruments-3d/primus-1000/primus1000-pfd.xml b/Aircraft/Instruments-3d/primus-1000/primus1000-pfd.xml
index dd773d800..02e887860 100644
--- a/Aircraft/Instruments-3d/primus-1000/primus1000-pfd.xml
+++ b/Aircraft/Instruments-3d/primus-1000/primus1000-pfd.xml
@@ -320,28 +320,22 @@ Primus 1000 Primary Flight Display
 <animation>
     <type>translate</type>
     <object-name>GSneedle</object-name>
-    <property>instrumentation/nav/gs-needle-deflection</property>
+    <property>instrumentation/nav/gs-needle-deflection-norm</property>
     <interpolation>
         <entry>
-            <ind>-10.0</ind><dep>-0.0188</dep>
+            <ind>-1.0</ind><dep>-0.0188</dep>
         </entry>
         <entry>
-            <ind>-5.0</ind><dep>-0.0162</dep>
-        </entry>
-        <entry>
-            <ind>-2.5</ind><dep>-0.0083</dep>
+            <ind>-0.5</ind><dep>-0.0162</dep>
         </entry>
         <entry>
             <ind>0.0</ind><dep>0.0</dep>
         </entry>
         <entry>
-            <ind>2.50</ind><dep>0.0078</dep>
+            <ind>0.5</ind><dep>0.0158</dep>
         </entry>
         <entry>
-            <ind>5.0</ind><dep>0.0158</dep>
-        </entry>
-        <entry>
-            <ind>10.0</ind><dep>0.02</dep>
+            <ind>1.0</ind><dep>0.02</dep>
         </entry>
     </interpolation>
     <axis>
diff --git a/Aircraft/Instruments-3d/vor/vor.xml b/Aircraft/Instruments-3d/vor/vor.xml
index 624b902af..923cfd7f2 100644
--- a/Aircraft/Instruments-3d/vor/vor.xml
+++ b/Aircraft/Instruments-3d/vor/vor.xml
@@ -6,7 +6,7 @@
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[0]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-in-range>/instrumentation/nav[0]/in-range</nav-in-range>
  </params>
@@ -102,7 +102,7 @@
   <type>rotate</type>
   <object-name>GlidescopeNeedle</object-name>
    <property alias="../../params/nav-gs-needle-deflection"/>
-  <factor>-3.2</factor>
+  <factor>-32</factor>
   <min-deg>-32</min-deg>
   <max-deg>32</max-deg>
   <center>
diff --git a/Aircraft/Instruments-3d/vor/vor2.xml b/Aircraft/Instruments-3d/vor/vor2.xml
index 64887b1c2..cfab12ca8 100644
--- a/Aircraft/Instruments-3d/vor/vor2.xml
+++ b/Aircraft/Instruments-3d/vor/vor2.xml
@@ -6,7 +6,7 @@
   <nav-to-flag>/instrumentation/nav[1]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[1]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[1]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[1]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-in-range>/instrumentation/nav[1]/in-range</nav-in-range>
  </params>
@@ -102,7 +102,7 @@
   <type>rotate</type>
   <object-name>GlidescopeNeedle</object-name>
    <property alias="../../params/nav-gs-needle-deflection"/>
-  <factor>-3.2</factor>
+  <factor>-32.0</factor>
   <min-deg>-32</min-deg>
   <max-deg>32</max-deg>
   <center>
diff --git a/Aircraft/Instruments/hsi-bk-hi.xml b/Aircraft/Instruments/hsi-bk-hi.xml
index 10ddd8757..d1a0430c4 100644
--- a/Aircraft/Instruments/hsi-bk-hi.xml
+++ b/Aircraft/Instruments/hsi-bk-hi.xml
@@ -18,7 +18,7 @@ Mar 18 2003
  <h-base>512</h-base>
  
  <params>
-  <gs-needle>/instrumentation/nav[0]/gs-needle-deflection</gs-needle>
+  <gs-needle>/instrumentation/nav[0]/gs-needle-deflection-norm</gs-needle>
   <vor-needle>/instrumentation/nav[0]/heading-needle-deflection</vor-needle>
   <radial-selected-deg>/instrumentation/nav[0]/radials/selected-deg</radial-selected-deg>
   <to-flag>/instrumentation/nav[0]/to-flag</to-flag>
@@ -424,10 +424,8 @@ Mar 18 2003
     <transformation>
      <type>y-shift</type>
      <property alias="../../../../../params/gs-needle"/>
-     <min>-3.5</min>
-     <max>3.5</max>
-     <scale>24</scale>
-     <offset>-24</offset>
+     <scale>84</scale>
+     <offset>-84</offset>
     </transformation>
    </transformations>
   </layer>
diff --git a/Aircraft/Instruments/hsi-hi.xml b/Aircraft/Instruments/hsi-hi.xml
index 8a6c2d6fb..ef77ad60b 100644
--- a/Aircraft/Instruments/hsi-hi.xml
+++ b/Aircraft/Instruments/hsi-hi.xml
@@ -12,7 +12,7 @@ Started 24-7-01 by Timothy Gale
     <h-base>128</h-base>
 
  <params>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <hsi-has-gs-needle>/sim/instrument-options/hsi[0]/has-gs-needle</hsi-has-gs-needle>
  </params>
 
@@ -132,9 +132,7 @@ Started 24-7-01 by Timothy Gale
    <transformation>
     <type>y-shift</type>
     <property alias="../../../../../params/nav-gs-needle-deflection"/>
-    <min>-3.5</min>
-    <max>3.5</max>
-    <scale>7.0</scale>
+    <scale>24.5</scale>
    </transformation>
    <transformation>
     <type>rotation</type>
diff --git a/Aircraft/Instruments/hsi.xml b/Aircraft/Instruments/hsi.xml
index 34b47b439..5c1924c61 100644
--- a/Aircraft/Instruments/hsi.xml
+++ b/Aircraft/Instruments/hsi.xml
@@ -12,7 +12,7 @@ Started 24-7-01 by Timothy Gale
     <h-base>128</h-base>
 
  <params>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <hsi-has-gs-needle>/sim/instrument-options/hsi[0]/has-gs-needle</hsi-has-gs-needle>
  </params>
 
@@ -132,9 +132,7 @@ Started 24-7-01 by Timothy Gale
    <transformation>
     <type>y-shift</type>
     <property alias="../../../../../params/nav-gs-needle-deflection"/>
-    <min>-3.5</min>
-    <max>3.5</max>
-    <scale>7.0</scale>
+    <scale>24.5</scale>
    </transformation>
    <transformation>
     <type>rotation</type>
diff --git a/Aircraft/Instruments/hsi2.xml b/Aircraft/Instruments/hsi2.xml
index 182c55e93..fc37d8cd2 100644
--- a/Aircraft/Instruments/hsi2.xml
+++ b/Aircraft/Instruments/hsi2.xml
@@ -15,7 +15,7 @@ Started 24-7-01 by Timothy Gale
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <hsi-has-gs-needle>/sim/instrument-options/hsi[0]/has-gs-needle</hsi-has-gs-needle>
   <heading-deg>/orientation/heading-magnetic-deg</heading-deg>
   <autopilot-heading-deg>/autopilot/settings/heading-bug-deg</autopilot-heading-deg>
@@ -181,9 +181,7 @@ Started 24-7-01 by Timothy Gale
    <transformation>
     <type>y-shift</type>
     <property alias="../../../../../params/nav-gs-needle-deflection"/>
-    <min>-3.5</min>
-    <max>3.5</max>
-    <scale>7.0</scale>
+    <scale>24.5</scale>
    </transformation>
    <transformation>
     <type>rotation</type>
diff --git a/Aircraft/Instruments/nav1-hi.xml b/Aircraft/Instruments/nav1-hi.xml
index 112cf7ea4..0a90cc4ab 100644
--- a/Aircraft/Instruments/nav1-hi.xml
+++ b/Aircraft/Instruments/nav1-hi.xml
@@ -32,7 +32,7 @@ properties' values.
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[0]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-has-gs-needle>/sim/instrument-options/nav[0]/has-gs-needle</nav-has-gs-needle>
   <nav-needles-pivot>/sim/instrument-options/nav[0]/needles-pivot</nav-needles-pivot>
@@ -214,9 +214,9 @@ properties' values.
     <transformation>
      <type>rotation</type>
      <property alias="../../../../../params/nav-gs-needle-deflection"/>
-     <min>-3.5</min>
-     <max>3.5</max>
-     <scale>-7</scale>
+     <min>-1</min>
+     <max>1</max>
+     <scale>-24.5</scale>
     </transformation>
     <transformation>
      <type>x-shift</type>
@@ -254,8 +254,6 @@ properties' values.
     <transformation>
      <type>y-shift</type>
      <property alias="../../../../../params/nav-gs-needle-deflection"/>
-     <min>-1</min>
-     <max>1</max>
      <scale>25.6</scale>
     </transformation>
     <transformation>
diff --git a/Aircraft/Instruments/nav1.xml b/Aircraft/Instruments/nav1.xml
index ea25aab39..1c9b8beed 100644
--- a/Aircraft/Instruments/nav1.xml
+++ b/Aircraft/Instruments/nav1.xml
@@ -32,7 +32,7 @@ properties' values.
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[0]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-has-gs-needle>/sim/instrument-options/nav[0]/has-gs-needle</nav-has-gs-needle>
   <nav-needles-pivot>/sim/instrument-options/nav[0]/needles-pivot</nav-needles-pivot>
@@ -214,9 +214,7 @@ properties' values.
     <transformation>
      <type>rotation</type>
      <property alias="../../../../../params/nav-gs-needle-deflection"/>
-     <min>-3.5</min>
-     <max>3.5</max>
-     <scale>-7</scale>
+     <scale>-24.5</scale>
     </transformation>
     <transformation>
      <type>x-shift</type>
diff --git a/Aircraft/Instruments/vor1-c172s.xml b/Aircraft/Instruments/vor1-c172s.xml
index 90cae471a..e29ee73f2 100644
--- a/Aircraft/Instruments/vor1-c172s.xml
+++ b/Aircraft/Instruments/vor1-c172s.xml
@@ -21,7 +21,7 @@ Jan 26 2003
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[0]/heading-needle-deflection</nav-heading-needle-deflection>
   <!-- when posible change to nav-gs-in-range -->
   <nav-in-range>/instrumentation/nav[0]/in-range</nav-in-range>
@@ -219,9 +219,9 @@ Jan 26 2003
      <type>rotation</type>
      <offset>0</offset>
      <property alias="../../../../../params/nav-gs-needle-deflection"/>
-     <min>-3.5</min>
-     <max>3.5</max>
-     <scale>-10.0</scale>
+     <min>-1</min>
+     <max>1</max>
+     <scale>-35.0</scale>
     </transformation>
    </transformations>
   </layer>
@@ -246,9 +246,7 @@ Jan 26 2003
      <type>rotation</type>
      <offset>0</offset>
      <property alias="../../../../../params/nav-gs-needle-deflection"/>
-     <min>-3.5</min>
-     <max>3.5</max>
-     <scale>-10.0</scale>
+     <scale>-35.0</scale>
     </transformation>
     <transformation>
      <type>x-shift</type>
diff --git a/Aircraft/c172p/Instruments/vor/vor.xml b/Aircraft/c172p/Instruments/vor/vor.xml
index 624b902af..923cfd7f2 100644
--- a/Aircraft/c172p/Instruments/vor/vor.xml
+++ b/Aircraft/c172p/Instruments/vor/vor.xml
@@ -6,7 +6,7 @@
   <nav-to-flag>/instrumentation/nav[0]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[0]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[0]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[0]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[0]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-in-range>/instrumentation/nav[0]/in-range</nav-in-range>
  </params>
@@ -102,7 +102,7 @@
   <type>rotate</type>
   <object-name>GlidescopeNeedle</object-name>
    <property alias="../../params/nav-gs-needle-deflection"/>
-  <factor>-3.2</factor>
+  <factor>-32</factor>
   <min-deg>-32</min-deg>
   <max-deg>32</max-deg>
   <center>
diff --git a/Aircraft/c172p/Instruments/vor/vor2.xml b/Aircraft/c172p/Instruments/vor/vor2.xml
index 64887b1c2..2f73f3e6a 100644
--- a/Aircraft/c172p/Instruments/vor/vor2.xml
+++ b/Aircraft/c172p/Instruments/vor/vor2.xml
@@ -6,7 +6,7 @@
   <nav-to-flag>/instrumentation/nav[1]/to-flag</nav-to-flag>
   <nav-from-flag>/instrumentation/nav[1]/from-flag</nav-from-flag>
   <nav-radial-selected>/instrumentation/nav[1]/radials/selected-deg</nav-radial-selected>
-  <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection</nav-gs-needle-deflection>
+  <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection-norm</nav-gs-needle-deflection>
   <nav-heading-needle-deflection>/instrumentation/nav[1]/heading-needle-deflection</nav-heading-needle-deflection>
   <nav-in-range>/instrumentation/nav[1]/in-range</nav-in-range>
  </params>
@@ -102,7 +102,7 @@
   <type>rotate</type>
   <object-name>GlidescopeNeedle</object-name>
    <property alias="../../params/nav-gs-needle-deflection"/>
-  <factor>-3.2</factor>
+  <factor>-32</factor>
   <min-deg>-32</min-deg>
   <max-deg>32</max-deg>
   <center>
diff --git a/Aircraft/c172p/Models/c172p-2d-panel.xml b/Aircraft/c172p/Models/c172p-2d-panel.xml
index b0c70b363..161235788 100644
--- a/Aircraft/c172p/Models/c172p-2d-panel.xml
+++ b/Aircraft/c172p/Models/c172p-2d-panel.xml
@@ -198,7 +198,7 @@ Legacy 2D instruments and actions for the 3D C172P cockpit.
    <nav-to-flag>/instrumentation/nav[1]/to-flag</nav-to-flag>
    <nav-from-flag>/instrumentation/nav[1]/from-flag</nav-from-flag>
    <nav-radial-selected>/instrumentation/nav[1]/radials/selected-deg</nav-radial-selected>
-   <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection</nav-gs-needle-deflection>
+   <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection-norm</nav-gs-needle-deflection>
    <nav-heading-needle-deflection>/instrumentation/nav[1]/heading-needle-deflection</nav-heading-needle-deflection>
     <nav-has-gs-needle>/sim/instrument-options/nav[1]/has-gs-needle</nav-has-gs-needle>
     <nav-needles-pivot>/sim/instrument-options/nav[1]/needles-pivot</nav-needles-pivot>
diff --git a/Aircraft/c172p/Panels/c172-vfr-panel.xml b/Aircraft/c172p/Panels/c172-vfr-panel.xml
index 257ebb642..8f480fd31 100644
--- a/Aircraft/c172p/Panels/c172-vfr-panel.xml
+++ b/Aircraft/c172p/Panels/c172-vfr-panel.xml
@@ -240,7 +240,7 @@ override those by providing <w>..</w> and <h>..</h> properties with the
    <nav-to-flag>/instrumentation/nav[1]/to-flag</nav-to-flag>
    <nav-from-flag>/instrumentation/nav[1]/from-flag</nav-from-flag>
    <nav-radial-selected>/instrumentation/nav[1]/radials/selected-deg</nav-radial-selected>
-   <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection</nav-gs-needle-deflection>
+   <nav-gs-needle-deflection>/instrumentation/nav[1]/gs-needle-deflection-norm</nav-gs-needle-deflection>
    <nav-heading-needle-deflection>/instrumentation/nav[1]/heading-needle-deflection</nav-heading-needle-deflection>
     <nav-has-gs-needle>/sim/instrument-options/nav[1]/has-gs-needle</nav-has-gs-needle>
     <nav-needles-pivot>/sim/instrument-options/nav[1]/needles-pivot</nav-needles-pivot>
diff --git a/Aircraft/c172p/Systems/KAP140.xml b/Aircraft/c172p/Systems/KAP140.xml
index 55df74516..609cd031f 100644
--- a/Aircraft/c172p/Systems/KAP140.xml
+++ b/Aircraft/c172p/Systems/KAP140.xml
@@ -207,7 +207,7 @@
       <value type="bool">true</value>
     </enable>
     <input>
-      <prop>/instrumentation/nav/gs-needle-deflection</prop>
+      <prop>/instrumentation/nav/gs-needle-deflection-norm</prop>
     </input>
     <reference>
       <value>0.0</value>
diff --git a/Aircraft/c172p/c172p-set.xml b/Aircraft/c172p/c172p-set.xml
index 60155572b..fee7b5d0a 100644
--- a/Aircraft/c172p/c172p-set.xml
+++ b/Aircraft/c172p/c172p-set.xml
@@ -205,7 +205,7 @@ Started October 23 2001 by John Check, fgpanels@rockfish.net
         to override the ones that are in the .nas file.-->
    <script><![CDATA[
                     headingNeedleDeflection = "/instrumentation/nav/heading-needle-deflection";
-                    gsNeedleDeflection = "/instrumentation/nav/gs-needle-deflection";
+                    gsNeedleDeflection = "/instrumentation/nav/gs-needle-deflection-norm";
                     staticPressure = "systems/static/pressure-inhg";
     ]]>
    </script>