The DW and I have been campers for years and are in our 70s , we decided last year we were done and sold our camper. we have owned from PUP to fifth wheel and a motor home. Long story short we could not follow thru our no more camping so we just purchased a used 2004 fleetwood terry 300BHS and is has some moisture damage and needs an awning, the slide awning has slipped to one side but is not damaged so I think we can center it and lock it in place and it will be fine. I removed the ceiling panel in bedroom. All moisture damage is from front seam in the bedroom area. I am going to have to repair 2 rafters and some new plywood(now has OSB. I think I can do that from inside without having to remove roof membrane. It is actually a small section. If not I will cut the roof membrane and peel it back and replace wood . Pup membrane and use eternabond tape to repair. Then new beadboard ceiling in bedroom. Ok where is my thinking flawed? I am a woodworker and have previously done this type repair to a fifth wheel/ By the way we knew all the problems and bought it at a very low price as is.
I will take pictures as I go.