I'm not trying to make light of your situation, I am truely sorry for the condition. MAYBE, and this could help alot of people, with all the talent here, could you devise some way to put a "shock absorber" on your hand to simmer the shakes down? Steering dampner, that's what I'm thinking of. Like the 4X4's with the huge tires that caused the front ends to go all wobbly at certain speeds...till you put the dampner on.