need some here right quick. passenger side headlight motor suddenly didnt wanna go up one day. one day i was cleaning out the engine bay and just turned the knob a little bit and it was a bit tight...tighter than the driver side knob. the next day, headlight worked! now it doesnt again. could this be the gear in the motor? or the motor itself? please tell me its just the gear so i can just do the turny 180* thing. thanks....