My progress to date; I have removed the bathroom down to the dirt(I don't have a shop). I have removed every thing to the bedroom walls. I had to loosen the bedroom closet frame to get to the screws that held the closet over the water heater. Plumbing; gone. a few hours ago the welder left and the rear end is good for another 50 years(like I care I would be 104). Now for reassembly. My first mistake(that I know of yet)is that I had the box that holds the waste tank made before the welding was done. I have to shorten the box a quarter of an inch.
Its raining but soon the box alteration will begin.