Hi all, I'm fairly new here, and relly enjoying the forum. Sorry if this is an old question. I've looked back through old posts but haven't found anything that answers my problem. I've got a '01 426 that i've had for 3 months but haven't used it much yet. Absolutely love the bike, but the cam chain is very noisy. I removed the tensioner and checked and cleaned it. It appears to be good. The noise remained so I replaced the timing chain with a new OE one. And still the noise remains. I know these engines are noisy, but a mate has a similar 426 and his chain is more or less silent, before and after his rebuild (3rd gear dogs worn). I will check the chain for slack at the front and cam timing again as it was my mate who didi the final assembly while I was away. Though I'm confident he's got it right. I'm concerned that if it's slapping around there could be enough slack for it to jump a tooth, and then... That's why I haven't ridden it much. Sorry to go on, but I'd really appreciate any comments. Cheers.