I have a teleflex no-feedback rotary steering hub turning my Mercury 150 outboard. The system is 2 years old. When new you could let go of the wheel and the motor would continue straight. Now releasing the wheel causes it to torque steer to the right, even at idle speeds. Is there anyway to correct this without replacing the head. I have adjusted the trim (torque) tab without success. It seems the "no- feedback" has worn out. Thanks