Too much nosewheel throw. The fellows often get this one wrong and rig in far to much mechanical advantage. Reducing rudder throw to a resonable angle electronically with endpoint reduction often ends up with still too much nosewheel throw that makes any pilot look bad on takeoffs.

For any trainer always use the closeest hole at the servo with the nosewheel steering pushrod and the hole farthest out at the nosewheel.

John