Well I started to pull my motor today and as i was taking a rest I happend to look down the accufab 70mm TB.I noticed that one of the screws that hold the Throttle blade to the shaft was broken off.I know it was there when I put it on so now im wondering what or if the top of that allen screw did anything .The motor has what sounds like a rod knock now im wondering if it has anything to do with that screw any ideas.