Bill, I have never experienced severe headshake with mine....I do get a kinda lazy snaking wobble on deceleration from speeds above 70 mph. Doesn't seem to matter how I slow down, hard braking, downshifting, or just rolling off the throttle. But ONLY on decel. I have done a bunch of stuff to try to eliminate it & improve the handling. Replaced the ball bearings in the steering head with tapered roller bearings, replaced the stock steering dampener with a Bilstein, torrington bearings on an 1" longer swingarm (off a '74 h2) instead of stock bushings, Bilstein rear shocks with dual rate springs, air fork kit & numerous different sets of tires (more rears than front LOL). Handles somewhat better, still not great, but the wobble on decel will not go away! I don't ride it much at all anymore, it's worth too much, parts are almost unobtainium & I don't like playing dodgeball when I'm the only one on my team. Mine is said to be the first one sold in Fla., for sure the first one sold by The Cycle Shop in Tallahassee. I've owned it since '78, second owner. BTW, NEVER, EVER armor all the seat......0-: