Just bought a used M12000 and the wire won't free spool out. I haven't connected it up to see if it spools under power though. Also, the clutch lever spins 360 degrees clockwise but stops at 6:00 (disengage) when spinning counter clockwise. I want to take it apart but the serial number is gone so I don't know which parts are for it. Is there a way to determine the serial range this thing is in or is there another location of the serial number on the winch?