Hello All. The story, 6 weeks ago i got my local repair person th balance the carbs, this was done i did not notice much difference. I was advised of a top end noise ( yep i new of this). Last weekend I took the cover off and checked and adjusted some of the valves that seemed to be a little bit loose. While apart i noticed the cam chain was a little bit loose ( between the cams) I loosened the ctt about 5mm and the chain tightened so i pushed up and down a few times, seems it may have been stuck loose and not putting pressure on the chain. Bike now runs quiet, only problem is now when expect the revs to drop down they seem to hang between 3-4k, at a set of lights I partly engage the clutch to slow the motor down to 1.5k. all good. Then the revs will increase up again? would you say the floats are set to high causing this. help appreciated.