A friends 97 K1200LT has a loose brake disk on the rear. Simply too much clearance on the rivets. There is very little wear on the disk, has not been abused. We have been told by others that this was not an uncommon problem on the 1st year Lt1200. Any advise on eliminating the problem other than replacing entire unit? I believe that this is a "floating disk" by design, but a bike that has the BMW label on it should'nt be heard clanging down the road at low speed. Any recalls that I don't know about? If I remember correctly, the bike only has about 35k on it. Has been doing this only for the last 15k or so.