The old Honda headshake rears its ugly head again. Yep, I've had it on every Gold Wing I've owned. Except this one. I always noticed it at a slightly lower speed when slowing down. Especially if I was decelerating and took both hands off the bars to do something like zip up a jacket. FWIW, I also noticed it on later model Harley's after they switched to the smaller front tire. If unchecked, it would turn into a tank slapper on both brands. Do you have a forkbrace? Just fishing, don't know if that would help or not, but my bike seems to handle better with one, and I haven't noticed any shimmy on it. One of my friends dumped his wing on the highway with a highway speed wobble. I don't know what he was doing when it happened, but we need to research this over on the wing forum.