Here for RTFM12:
Ensure that the actuator is connected to the change rod at the correct point - there is a depression in the rod for the securing screw. Also, were the correct instructions followed for replacement of the gasket; the actuator lever should not be dis-assembled because it is on a spline and there is only one way to re-assemble? Any play in the ball joints? Was the actuator screw loosened during the basic setting?