I agree, but motorhomes are a huge was of money new, I myself couldn't just buy a 100- 200k unit use it to 30k miles and then let it sit on the side of my house to rot under a bunch of trees :( I've found very few people take care of these things, sure they are built a little bit better but seams and openings need to be check and renewed often I can't push this enough. The guy I bought my Shasta said in his owen words that it was in really nice shape and he paid over 5k for it a few years ago and loaned it to his buddy and he ran it into a tree and they never did anything about it. I saw only a little shreaded tarp and a bunch of weathered tape over the damage, parked the rear down hill so all the water just leaked in and worked it's way back, humm I wish I could have bought it right after it happened.
Anyways Neacoal good to hear that it got tight after you got some screws in.
And a little tip I foud to make cleaning that putty up is a wire wheel in the drill, you don't need to get it super clean could just give it a once pass with a putty knife as long as the old stuff is somewhat dirt free and still soft and sticky.
Glad you fixing a older unit instead of blowing the bank on a new one. :)