Thanks for the tips, gents! Resealed several seams this morning with silicon. I sure don't have the knack for applying that stuff.
Did better this time because I drilled a small hole in the end of the tube so I would only get a small line. Had to put down a couple lines in some places but at least I didn't get a huge line that looks really bad.
Lou, I think the mineral spirits and alcohol must have cleaned the surfaces nicely. I had a heck of a time getting a couple smears off the side of the coach!