Hot on the heels of another thread relating to losing power at high revs. I decided to ride my old R60/6 today instead of my R1150R, and bugger me if it didn't start dropping revs at higher throttle openings. It's not missing, its just running out of puff. When I stopped for a minute or two it's then ok for a while. I haven't had time to check much yet, my first port of call will be the fuel cap vent hole. I hope it's not a carby problem. those old pre-CV carbs can be a biatch.