I have a thread going on over at the Hinckley classics forum but I thought I would post in a more appropriate place. I am doing a somewhat common ZRX rear wheel swap on my Thunderbird. The problem that I am running into is that the ZRX sprocket is about 1/8 in closer to the center of the hub than stock. My question is how I should go about safely spacing the rear sprocket? I have looked at place a washer under the sprocket however there is a machined lip on the hub that the sprocket sits in that would no longer contact the sprocket. What would be the idea process be to get the correct chain line?