I just bought an old 27' (1985) Chieftain and am starting the restoration/remodel of it. I was wondering if I have to take into consideration the interior walls. Are they structural? Specifically is the wardrobe supporting anything? Also, how are the outside walls and roof made, structurally? If I were to rip the inside sheathing off (not that I'm going to do this) what would I see? Knowing that would probably make it easy to figure out how everything is hidden.