I missed you Wilbur!!! I also missed your vibe problem. Can you isolate it?
Is it more in the handle bars or the seat?
Is it more at higher RPMs or lower, and not speed related?
Or does it happen more at high speeds and isn't RPM related?
Some ideas: Loose engine mount bolt(s), tire balance, DRIVE SHAFT (that's a good one), steering head bearing adjustment, loose or broken shocks, have you lost your ECM tune? (this has happened many times)
I'm just tossing some ideas out to chew on :bch: