Well, I used to be a CH46 helicopter mechanic, auto mechanic, lycoming and continental aircraft engine builder, and CNC machinist before becoming a mechanical engineer. I have worked on all of my cars and motorcycles along with other's. However, I did buy this bike to ride and not build but I do not want to lock up the rear end after hearing what seems to be a bearing going bad. I just don't want to go through the trouble of the bearing and then end up with a 2nd gear issue that I could have taken care of when I had it torn down pretty much anyways.