"Stripper poles" in Scamp
All of the fiberglass interior models should have two of them, on the rearward ends of the galley on both sides. They provide necessary support for the shell. The deluxe (wood interior) models don't have them because they have floor-to-ceiling cabinetry on the street side.
Most single-wall molded trailers depend on interior components to support the shell and maintain its shape.