Re: Engine Vibration
Lead sheet goes between the frame and the engine, and between the "U" shaped clamp piece, and the frame.
I know there are folks who will point out that lead is not the most use friendly material in that it is "poisonous". Having said that, use glove when handling it, and especially if it has white dust/corrosion on it.
Got mine from the old style boot that goes around sewer/chimmney vents.
Cut four pieces and install them on each side of both tubes at the mounts.
Fit up the engine, slip each piece in place and tighten as usual.