I bought my 2001 Z3 3.0 in Feb of 2008. This summer I bought a hardtop for it on Ebay. I just installed the hardtop and I am getting a lot of wind noise from where the leading edge of the hardtop meets the top of the windshield. I've tightened the screws well but I still get the noise when I am at 50MPH or higher. I sounds like air in leaking into the cabin. The gasket is in good condition and the mating of the hardtop with the windshield appears to be a good fit. Any thoughts on this? Bob