Hi Junker
Thanks what your saying sound more like it however I've balance the carbs its made it a load better but not resolved it, no problem with changing gear or slipping, but when its at 2500 rpm in all 4,5,6 gears around town it does sound like chattering, its like being on a V twin in to high a gear, ( if youve ever rode a V twin you'd know)
What all have you done to your bike to solve it have you sorted it? can't see how it would be a clutch problem as it only does it at 2500 rpm every where else in the rev range bike pulls clean and strong no knocks or clunks and the gear box is smooth in all gears.
I've spoken to another owner his bike does the same its got just under 5k on it from new its a 2000 one. Apaort from this really like the bike.
Cheers
K