I have shimmed the wheel in between cardboard disks I cut out and its bolted on with he crank bolt. Its wedged I between the crank and the washer on the bolt. Once again tho if that was the issue how could it be right at tdc every time both ways? I can go Clockwise to TDC and its zero! Go Counter CW to TDC and its still zero. So I don't understand how it could be moving. That was my first thought also! I will try the positive piston stop and set it to TDC that way. I don't think I'm 20 degrees off TDC but I will try it.
