I was wondering if anyone has experienced a noisy rear brake disc on their K1200LT. I took the bike out for a ride the other day and heard this rattle coming from the bike. Upon further inspection I found that the rear disk is loose around the rivets that hold it in place. Is this common? It almost seems like there should be some circlips or something to hold this disk secure against the rivets. Anyway it is very annoying when running around town at slow speeds. I can't hear it when out on the highway. Any suggestions?