That was definitley the prob, switched the arm and it turned fine. Only prob now is I need to center it...take the arm back off and let the servo center so the wheels are straight. When you mention end points are you referring to the linkage arm that's connected to the servo arm? Is that even the right terminolgy? The arm where you can make it shorter or longer?? The truck turns awesome now from a standstill. Wondering should I replace the throttle/brake servo now.