I'm using a RE hack n tap, so I don't think I could cut it shorter, and I don't think I had to. I didn't make it bottom out. I've probably done about 50 miles or so on it now and it hasn't had anymore issues, so it was probably just a fluke or something. Maybe since there was no resistance on the shaft and it was spinning so fast is what caused it to grind. I think the vibes I still have are probably the angle so I'm gonna get some shims on Monday.