Greg, as a matter of fact i just put some blue loctite on it. I went to start it up this morning and same thing...it started slipping. That gear nut literally twisted itself loose during the 5 min ride i took it on last night after i figured out this mess. So i just tightened it up and through loctite on it. You guys think i might have a sheared off key. I was told to look at the key and see if its sheared. Idk what the heck a good or bad key would look like. I looked at the key and it was there sitting just about flush behind where that cerrated lock washer and that nut butt up against. Im going to do some research and see what i can come up with.