My older garage door is a metal "tilt up" supported by a "screw drive" Lift-Master/Chamberlain model "1030 S." I have fiddled with everything (WD40, the force-adjustment screws, etc.) but it still only goes up half way. It was working for ages. Was thinking to regrease the screw drive as my final option before replacing the motor. I would appreciate your advise. Thank you.