Car drives fine with the top up, I just drove it for the first time today with the top down. Big difference, the whole car shakes around at about 35-45mph. I don't know what happens faster than that. Anyone ever have this issue ? It does kind of feel like it bounces a little with the top up. Not sure if that has to do with the weld skinnys on the front though. Could a out of Wack wheel weight cause this and be worse with the top down because of less support?