You have an Argosy, do you see any flexing of the shell?
Some, but nothing excessive. These are different than the trailers, the chassis is much stronger than the body. If the chassis flexes the body has to be able to flex with it. Do you have a lot of rivets missing heads? That would indicate excessive flex.
How much is left of the lower panel, enough to repair with the fiberglass? Because of some changes I made I cut quite a bit of mine off and it looks pretty original. Any way you can cut it back some so there is less repair?