Have to give a thumbs up to my dealer, Gloucester RV, for taking care of me. They finished up today and it's all ready to go. Upon removing a few pieces of siding he was able to confirm no water damage. Apparently he was correct with his assessment of the glue/epoxy eating the aluminum siding (which did get a small area wet from rain but no rot and it is dried out now). While he was there he also removed the pass through window and rotated it 180 degrees so that it opens on the correct side and actually opens up at the center of the truck rear window instead of to one side. I still can't understand why Travel Lite did the window like that. He also fixed the leak at the air conditioner gasket and resealed everything on the roof and the rest of the camper too. Makes me feel better. Not about Travel Lite, but about someone actually caring and making an effort.
Now I need to determine if I should try and sell it while the condition is like it is, or get a custom cover and hope for the best. There could still be problems in places we can't see and don't know about.
BTW, I did forward this thread to Travel Lite and asked them to please send the parts I need and help all of us who have major issues with their products and to please call me. I did receive a reply mentioning the siding was sent at great cost to them (as if I should grateful?) and to have a nice day. Guess I'm on my own now...warranty is over.