OK so I have searched the entire internet and it has not been much help. I just recently got a 2004 Mustang convertible and at high speeds on the highway, my rear windshield rattles. I think it might have something to do with the carwash I took it through (last time I do that)...any ideas on how to fix this??? PLEASE HELP!!!

 

does it actually rattle or just bounce up and down?? if it just bounces up and down then that is normal because of the wind and air pressure flowing over it. its not going to be as strong as a normal top would, obviously. but if it is an actual rattle then i have no idea because i cant think of anything that the rear window would be touching that would make it rattle.