Jim
Never do install your servo linkage this way. This is poor mechanical linkage.
Look at the drawing on my post about mechanical advantage linkage set up.
You want the servo arm to be short as possible. The control arm on the stabs long as possible. Allow your ATV travel at least 100% to get the max mechanical advantage.
This also reduce sloppy play between the servo to the flying surface.
Yes proper pivot point the stabs will be more dynamic balance require less torque from the servo to hold the stabs and prevent your servo from stalling.
http://images.rcuniverse.com/forum/u...57/Ur52162.pdf