I have a BA 2004 with 20km on the clock. I noticed an intermittent Klunk when I apply the rear brake but it seems to work ok As the bike is still under warrenty I had it checked out. The service department replaced the rear brake assembly plate that holds the brake assembly. This seemed to fix the problem until recently when I noticed the Klunk had returned. Has anybody had similar problems and if so what is the fix please.