For those of us who have complicated window belt line seals here's a procedure that I'm sure can be adapted to several type cars. In the case of my Cougar wagon and my 86 Tbird this process will work for both. I'm saving this site as a favorite because a lot of it also applies to the same year Cougar/Tbird as they were very similar vehicles. By the looks patience is required. Look at the "Refurbishing Lincoln Mark VII Dew Wipes" link on the left side of the page. http://www.thelincolnmarkviiclub.org/documents/tech/index.htm