Not sure if it will help with this top, but I have found that my Quadratec replacement top is loud as hell on the highway, but if I put the fan speed to three and choose outside air (as opposed to recirculate) the pressure inside builds up just enough to lesson the noise. When it's on recirculate, the side windows get sucked in and she's boomy and LOUD. But, select outside air and turn the fan speed up and the side windows puff out like a balloon and the noise level, although still loud, is much more tolerable. Just a suggestion to try before you write the top off.