I would be very grateful if anyone could identify my problem. I have just had a top end rebuild - Rebore, new piston and rings and gaskets ect. so isn't top end. I have rode it in 300 miles or so but now i am gettin quite a loud, only way to describe "clunk" sound when i change down gears from 3rd to 2nd to 1st ??? Plenty of gearbox oil in there so isn't on the way to seizure! Could it be the gear selector? Clutch plates?
