Thanks for replying Jon. It's definitely not a rattling, so I can rule out the camchain/camshaft noise I guess.
I don't know much about bikes/bike mechanics atm; by headers do you mean the parts of the exhaust that come out of the engine, before they converge into one single exhaust pipe? :-?
Also, if it was an inlet leak would that be somewhere on the wide rubber hoses coming out of my carbs?
Aaaand final question: If it was either of the things that you've mentioned above, is it harmful to the bike?
Really appreciate the help!
