Chuck,I've got grip puppies and the bike doesn't vibrate. I had this same issue on my FZ1 before I replaced the bars with some that were not swept back as far. It's part of an ulnar nerve issue that I have. For now I'll have to just deal with it since I've got no time to come up with an alternate solution. Ultimately I think I will do something like this: (1) My handle bar repositioning project | FJR Owners Forum
Some days, ya can't give it away . . .
You will not see or feel the vibes that cause numbness, with the FJR.
Okay, try this. Put the bike on the centerstand, sit on it in the riding position, engine OFF, and see if you get numbness in the same length of time as you experienced when riding. I'm betting no.
Please feel free to ignore my advice.