Our mechanic .... says that the bike is haunted (has demons). Bless his heart, he is a v-twin specalist and a grad of the Harley school.
Hey, I give himpoints for his tongue-in-cheek honesty. I mean, he could have said something about the franistan binding with the muffler bearing.
After putting the bike back on the lift and installing new rocker boxes (others warped) the bike quit shaking so violently, NO, that had nothing to do with the shake but it abated. Jim has reported that he fixed it.
So did it actually improve temporarily, as a result(?) of replacing the rocker boxes? Since he had to remove the front engine mount in order to lower the engine as a part of this repair, then re-install the front mount when done, could something have changed about the front mount during the process? and it's now returned to it's previous state? Could it be over-tightened, or a washer put in the wrong place, maybe? Or maybe too loose? I've done this job and I'll try to think about it, look at my bike, and see if I can remember any particulars.
Woooow, beeebbebnnn ridddin mmmyyy bbikke, it sstttillll ssshhhakes.
Sounds like a blast! OK, seriously, is it a high frequency buzz or a more defined "coarse" vibration? Do you feel it in the pegs or bars or both? At idle and at cruise?
[edit: never mind, I just re-read your first post.]