I have an 02 sprint with 18k on it, and have noticed a rattle on the left side, but only when I am decelerating, eaither just letting off the throttle or downshifting up to a stoplight/sign. I have gone through all the fairing bolts checking for somthing loose. If it were my cbr, id say cam chain or valves. But I know nothing about these engines. Anyone have any ideas?