diff --git a/Aircraft/c172-set.xml b/Aircraft/c172-set.xml
index c0b35609f..dfe5a882e 100644
--- a/Aircraft/c172-set.xml
+++ b/Aircraft/c172-set.xml
@@ -39,7 +39,9 @@ October 23 2001 John Check, fgpanels@rockfish.net
      <target-climb-rate-fpm type="float">500.0</target-climb-rate-fpm>
      <target-descent-rate-fpm type="float">1000.0</target-descent-rate-fpm>
      <elevator-adj-factor type="float">4000.0</elevator-adj-factor>
-     <integral-contribution type="float">0.001</integral-contribution> 
+     <integral-contribution type="float">0.01</integral-contribution> 
+     <zero-pitch-throttle type="float">0.45</zero-pitch-throttle>
+     <zero-pitch-trim-full-throttle type="float">0.14</zero-pitch-trim-full-throttle>
    </config>
  </autopilot>
 
@@ -55,5 +57,3 @@ October 23 2001 John Check, fgpanels@rockfish.net
  </consumables>
   
 </PropertyList>
-
-
diff --git a/Aircraft/c310-set.xml b/Aircraft/c310-set.xml
index 1e664c663..585326cbc 100644
--- a/Aircraft/c310-set.xml
+++ b/Aircraft/c310-set.xml
@@ -45,8 +45,10 @@ October 23 2001 John Check, fgpanels@rockfish.net
      <best-climb-speed-kt type="float">107.0</best-climb-speed-kt>
      <target-climb-rate-fpm type="float">1000.0</target-climb-rate-fpm>
      <target-descent-rate-fpm type="float">1000.0</target-descent-rate-fpm>
-     <elevator-adj-factor type="float">10000.0</elevator-adj-factor>
-     <integral-contribution type="float">0.001</integral-contribution>
+     <elevator-adj-factor type="float">6000.0</elevator-adj-factor>
+     <integral-contribution type="float">0.002</integral-contribution>
+     <zero-pitch-throttle type="float">0.45</zero-pitch-throttle>
+     <zero-pitch-trim-full-throttle type="float">0.11</zero-pitch-trim-full-throttle>
    </config>
  </autopilot>