<strong>Yahoo Message Number: 20982</strong>Paul: I wish I had the answers for you. I'll briefly share my experience with you and maybe shed some light on it. <br/>Hopefully your actuator is newer and has been improved over the 1999 version. <br/>On mine, the problems have centered on the stop switches at the end of travel on each end of the track. <br/>The small gear on the motor shaft is the pinion...