I also just bought one (2006 1400cc) & It vibrates enough to make your hands numb after a 1 hour ride @ hiway speeds. I pulled in the clutch & the vibration goes away. Do these engines run that rough or is it something else. The plugs indicate a perfect burn & I get 45miles per gal, seems pretty good to me. But I could do without that vibration. Anybody HELP??? Tom