ok i have a 2004 gsxr 1000(7600 miles on it) and i went for a ride and i heard knocking noises when riding. sounds like its coming from the engine. higher the rpm, the louder the knocking noise. pull the clutch in and it still does it. doesnt matter if im drivin or sittin still, it still happens. oil level is fine too. im thinking it might be a valve or a rod. any1 have the same problem or have any idea of what it could be?