Vibration at 4k rpm and up

everyone knows how a harley thumps and vibrates.....now double that......any motor with a hard thump in the exhaust sound is gonna translate into vvvvviiiiiibbbbrrrrraaaaaaatttttttiiiiiiiiooooooooonnnnnnnnn....make solid race mounts like in a drag car and then tell me about vibration lol....my honda crx has urethane mounts and an integra motor and vibrates all over the place.....u learn to live with it......as far as the guys hand falling asleep...lol....it has nothing to do with the vibration......its the position you are sitting and how much you squeeze the throttle.....try loosening your grip some while cruizing.....hence why your left hand never goes numb...lol

 

Bike is cured. Rode it home today and yes there are som vibrations, but the bad ones are gone. My mechanic also said that the carb sync was bad. But the worst fault was in the wires to the spark plug. Now i only need to dig out some cash and get a new pair of tires. Have Dunlop, anyone tried the Metzeler Z6 ?