I have a 380C6-L with about 30 minutes of run time. It is in a pede geared 17-87 ran great never over heated. Problem is it started to gog, after inspecting it I found that the shaft was able to move in and out of the motor can I take apart the motor to fix it or is the motor shot, I hope not as it ran great and is almost new, maybe 2 packs.