Re: Heavy duty rims are a PITA!
I think I know what you're writing about. I had the problem of the sprocket shifting from center. What I did was wrapped a brake cable around the hub between it and the sprocket. This kept the sprocket from deviating from center. Just wrap it in the gap. After the sprocket was installed and tightened down, I used hot glue to hold the cable in place. I have no sprocket problems due to off center sprocket now.