How hard is it to prevent this?

[Alex V.]

Last fall I had floors and other panels put in a Jeep CJ7 tub by a restoration shop (all makes) and in less than a week the epoxy 2K primer I specified pulled off of a good portion of the welds on the inside surfaces of the floor, and after one 500 mile trip in the rain (stored inside since) rust stains appeared from around some of the welds and crevices. Am I expecting too much that these flaws shouldn't be there? They were none too neat with the seam sealer, either - I'd thought they did good work but I'm becoming increasingly disappointed with their attention to detail.