My vent control knob won't move all the way counter-clockwise. The plastic actuators behind the console on the driver side are not fully articulating. I took them off and cleaned and light sanded the "l" shaped raceway and now am having trouble reconnecting the main raceway at the top. It is hidden by part of the vent shaft. Does anyone know of a way, short of taking the dash apart, of reseating the actuator raceway? I have pics of the part and location.