I have a question.. I have to do the complete interior. I have most of the butyl rubber pad down, and up the firewall. I still have to do inside the doors. My question for now has to do with the backing boards used for door panels. I used 1/8" paneling. Ugly face, but it will be covered.. I made the panel smooth with the edges. Should I cut that back by 1/8"to make room for material going over the edges?? Also.. Should all of the rubber seals be in place before starting the door panels?? Thanks.. Al