I get a little vibration on my FB's on the EG Classic. I think this is normal. I did notice today that if you put your left foot next to the rear shifter arm there is an incredible amount of vibration. The floorboards obviously damper a lot of numbing.

 

You may wanna check the clearence between the heat shield on the front pipe & the floorbd mount(s). Keep in mind that the pipe will move some while you're riding, so you need a reasonable amount of clearence in there.

I have had this cause HORRIBLE vibration in the rt floorbd. As someone already mentioned, it can also come from improper alignment of the slip-on hanger in the rubber mnt on the bag bracket.

 

Phil,
I have a gap in my floor board and the heat shield. This was done by the extension spacer that came with the Rinehart True Duals.

Plow64,
I don't really want to try the IDS for an experiment job, I was looking for something more concrete......an answer!

NCCopBikeRider,
I might have to look into the motor mount issue?

Mark