So I have an all stock dm5 and have been having weird issues with it. I have the predator board with dwell set at 18 and the LPR is a hair under 5 turns out. So one game I'm having issues the bolt isn't going back completely, is leaking down the bolt and seems to be stuck on the bump on the bolt that the top hat rides on. So I regrease and reset the LPR and awesome no problems. So then the next time we go out it's shooting like a champ, with the exception of some crazy first shot drop off something in the neighborhood of 20-30 fps. So I take it home and clean the bolt and LPR, relube (Dye slick). Go to test fire and the bolt is sticking again, same deal. In looking at the bolt it looks like there is a lot of wear over where the top hat rides. I've replaced both of the inner top hat orings several times. Has anyone had this problem and found a fix? I'm pretty close to just getting an L7 bolt since that would replace the problem areas.