Do you have both of the top bows in place?The front one adjusts up and down on the rear one on a slide.The roof has to have pressure on it to hold it taut.Does it have all its snaps,and is the front held in securely?I have a couple of these on the road,and my tops just shake and billow just like any other convertible,but no more so.Could you get some pics to see just what design you have,with pics of the bows and the way it is held on to the windshield? It also just could have been poorly installed in the beginning.