I use the spray lithium on all pivot points. The steps work smooth with the motor off. Even used WD-40 just to clean the pivots and than spray with lithium. The step motor is also used as a window motor, Just couldn't find one around here. Have had MH since 06, just started doing this last year. Will try a new motor, and hope that does it. The motor just didn't feel right when turning the pinion gear back and forth. will check the new motor, to see if it does the same thing. Will let you know what I find.