Could be any of the the three if too tight. If the original crappy top one is there, that won't make it vibrate, just give you lousy handling. The other two can be for sure too tight, just have to check for up down movement (lever between the motor and the bottom frame gently...and feel for a bit of movement at the iso shims) Play with them till it is just a bit of freedom and you will get less vibration and the best handling. It's a feelie touchie thing but you will get it after a few tries. By coincidence, I had to do my front one yesterday,it had started to rattle when I goosed the throttle, and I over tightened it....awful vibes at over three grand last night...so it's now Sunday morning, and that is on the list of most important chores...as you see...even someone who has had the pleasure of verniers for a few years, takes a couple of tries to get those adjusted right...but it will be worth it...great modification and top on my list of the ones I would do again on any future Machine.
:wink: