What material is used between the chrome molding and body on the roof rails? The actual weatherstrip attaches to the molding not the body. I have a leak on both sides coming from between the molding and the body on the trailing edge of the quarter window. I ordered the weatherstrip, but can't find anything for what goes between the molding and body. What it looks like to me is some sort of "foam" weatherstrip, but I can't see that being very good at sealing.