Thx RocketScientist, you were right, just a lot of thought/worry for nothing. It went extremely well. The sail panels turned out nice with only a few small wrinkles here or there. Now the next issue is the attachments for the door-panel like clips on the sail panels. They went on fine but now have pulled away. Guess headliner glue and a support over the area to keep them in place should work? Never thought to re-glue them before install but then again this is repro stuff. Still, nice looking and they match the headliner.
The rear seal and glass went in without an issue, I mean no struggle. I am so far very pleased with the result and progress. I'll post some pics shortly.