Craftsman 1/2 hp drive gear chewed up
I replaced the drive gear on this unit (after 13+ years without a single problem) and it only worked for a couple of weeks before the drive gear was chewed-up again. I admit it is not as easy to open the wooden double door manually as it used to be. I've tried tightening and lubricating but want to make sure before I invest in another drive gear. Any ideas? I can't find anything physically wrong with the door.