I am wanting to hear the replies to this also. I have the same problem. Not much play, but some. I read through Park Tools website, and I believe the answer is an extra shim. Edit... here is a post where I read about the shim
http://www.bikeforums.net/showthread.php?t=401763
Last edited by busted knuckles; 04-01-08 at 11:08 PM.