Overall the bike is free of unwanted vibrations, and full of wanted ones But, there is a buzz in the bars that comes and goes, always at just over 4000 rpm. There was another thread talking about a buzz from the forks. I don't know if this is the same thing. The forks feel quiet if I touch them when the bars buzz. I think its a resonance in the bars excited by that engine speed. No big deal, but its a thing the bike does that I don't love and that is unacceptable! Adding mass at the bar end would eliminate or move the resonance, it that's what it is. Anybody else have the same thing?