New to the forum, but I have a question. I own a 2010 Shadow RS, it has about 1000 miles on it and have just noticed a "tisk" coming from the rear when i begin to slow down. It might have been going on the whole time but just noticed because i rode without my helmet. i have adjusted the chain and cleaned everything up. i dont think it has anything to do with the brakes because it still happens without them applied. just imagine the sound of a rock in a tire, like "tisk, tisk, tisk", but no rock. Any ideas?