I have an idea that might help the vibration. I have some n.o.s. snowmobile engine mounts. They have a stud sticking out of each end with a "pancake" rubber insulator in between them. My plans are to use 4 of them and weld some cross braces to my bike frame and make coresponding braces to fit the engine mounts. In my mind, it "should" work. Anyone try this approach?