I just purchased a German canvas soft top from German Auto Tops in So. Cal. I also purchased a set of 4 seals, front, rear, and over each window from Bud's Benz. The box the top arrived in also contained two rubber strips about 20" long, tapered so they are thicker at one end than the other, flat on the bottom and kind of a truncated pyramid shape on top. Can anyone tell me what those two strips are for?