I actually recognize what he is saying. I might have the issue. It feels like play somewhere in the transmission. For me it is most recognizable when at speed, going of the throttle, decelerating on the engine, 1 second later it feels like some kind off weight which still had speed kicks in hitting the slowing down bike.

At first I thougt it might have been fuel in the tank. But I don't feel the thing when I decelerate (with a little brake) and pull the clutch.. It's definitly in the transmission somewhere...

I plan on taking everything appart next few months,.. But it helps to have a direction to search for.

Anyone got a clue?