Glider, (hope I'm not hijacking) but do you think my mystery wobble could have been from an unbalanced wheel. I wondered that earlier because when I got my new tires, they had to put quite a bit of weights on there. (At least in my opinion that was a lot) but there were none on there before. But the other thing, it happened about 35-40 mph, but I could not make it happen again. Hmmmmm.????