Restricted???

[noggythenog]

Just a thought. There might be crap in the fuel tank blocking the fuel tap slightly so the bike isn't getting enough fuel to the carbs. It would be OK at low rpm as there would be enough fuel, but at higher rpm's it would struggle. Not had experience of this self, just read about it. So I may be wide of the mark.

Good call


Also the fuel pipe that goes from the underneath of the tank could be kinked etc but if youve been doing carb balance etc then youve had the tank up and down so not likely.