OK I took the door apart, and the cable that goes into the top of the motor is freyed out of the track, into the motor and the plastic skeeve is stuck down in the motor. I would say it is screwed. Do I have to buy all the motor assembly, or can I just buy a new top cable. I want to know before I cut it so I can get my window up. Also how hard is it to do a whole neww motor and cable install?