What I am going to do is recaulk by removing molding and putting strip of eternabond along the joints everywhere I can. I just did the transition strip on one side at the rear between the body & the rear overhang. I will simply install the strip & re caulk, even if water gets in behind it, none will get into the camper. I simply trimmed a piece about 3/4 inch wide so it will lie hidden under the transition strip. I will slowly do the entire camper bit by bit