Did all the prosealing tonight. It is like working with very sticky taffy. It looks great and I hope I can get the clecos out. Just have to take your time with this step. Used 15 pairs of gloves. I put on 5 pairs at a time and that is the only way to do that. Trashcan full of popsicle sticks and rags and lots of gloves. Will check on it in 2 days and then do the double flush rivetting to finish it up.
Bottom side done ready to put layer on top and then close up.