diff --git a/data/stk_config.xml b/data/stk_config.xml
index 835073d10..f6b5c9223 100644
--- a/data/stk_config.xml
+++ b/data/stk_config.xml
@@ -381,7 +381,7 @@
                chassis-angular-damping="0"
                downward-impulse-factor="0"
                track-connection-accel="2"
-               smooth-flying-impulse="20"/>
+               smooth-flying-impulse="25"/>
 
     <!-- collision
          impulse-type: STK can apply an additional impulse in case of
@@ -418,7 +418,7 @@
            narrowest part of the kart.  -->
     <collision impulse-type="normal" 
                impulse="3000" impulse-time="0.1" terrain-impulse="8000"
-               restitution="1.0" bevel-factor="0.5 0.0 0.5"
+               restitution="1.0" bevel-factor="0.5 0.0 0.7"
                physical-wheel-position="0.5" />
 			 
      <!-- If a kart starts within the specified time after 'go',