Hello again, hello again. Good for you, finding out that a teardrop was not your cup of tea, just in time. Wow, it looks like you have found a real gem in that little standy. As your clean up continues and you plan to take care of the problems in the ceiling around the roof vent, keep in mind that what started the problem is probably faulty caulking and sealing of the roof vent itself. I had the same problem on the roof of my vintage Kenskill. In solving the problem, I unscrewed all of the attachment screws on the roof, removed the entire frame and roof vent, allowing the inspection of the roof members and ceiling material. I had to replace some minor cross-member supports, then after cleaning off all of the years-old caulking on the roof, I re-installed the roof vent, with quality caulking and new screws all around. So, good luck in your efforts to make this beauty a quality vintage gem. If you have any questions and need any other advice from other forum members, just pop in and ask, ask, ask. As you know, we are here to help.
Roly Nelson, the li'l ol' 1/2 Nelson woody teardrop designer, builder and user.