Not doubting you but how can you see the teeth? I just had somewhat the same problem with my kwickee step. There are four bolts that hold the whole motor assembly to a metal plate, that is attached to the underside of the coach. On my step the four bolts had sheared off, and the motor was not being held on to the metal plate. You may have somewhat the same problem. Maybe not all four but enough to cause the action of the motor and its arm to not fully retract the step. The bolts were brass and I replaced them with metric #6 stainless steel bolts. Once completed the steps work as good as new.