Eh guys. Im going to buy a 2009 yz450f tomorrow. I took it for a test drive yesterday and loved it, BIG difference between my old 250X. When i was driving it I stopped, put it in neutral and let the clutch out. It sounded like there was a little, maybe sounded like the cam chain. What does a loose cam chain sound like? It ran fine and started ok, but it was just this little noise coming from the top end that turned me off. It wasnt a ticking, rattling, or scraping sound I just want to hear what you guys have to say about this, I think I'm going to pick it up tomorrow. Thanks guys.