Did you move the alum stops on the linkage? with the car and control in the on position. giveit throttle and brake then let it go to "neutral" position. there shouldn't be any resistance on the spring on the linkage and the front stop should be just against or slighty in front of the servo arm. also make sure before you move anything your throttle trim is centered on you hand control. 2 small knobs 1 for steering correction 1 for throttle correction just piont the small line straight up.