[rgunlock]

After posting these pictures on the main board and asking for opinions I ended up cutting the skin off about an inch from the edge all around. I still have to drill out all the spot welds, and cut much closer to the rear seam in order to get at those welds. The last picture shows that lip that the inner roof attaches to sticks up enough to block access. Other than the rusted through spots I'd already cut out of the skin, most of the rust on the outer skin is surface.