Scot

YOU'RE ON

it's been there since I;ve had it. The shop is going to tear it apart in the coming weeks. They've already adjusted the balance shafts.

bad piston return spring. Happened on my friends CBR750F6

boing

I searched and didn't see anything about it.

if it's vibrations that's causing it, Heli bars are the wrong way to go. They are actually lighter than stock. Gel grips help, heavy bar ends help, filling the stock clip ons with silicone helps. Try a different pair of gloves and make sure your jacket sleeves are not too tight and that your jacket does not bunch up in your arm pits. Numbness is a circulation issue.