This trailer is one of the cheaper models. As such, it has a "short frame"...the metal frame that should extend to the rear of the trailer actually stops and the rear spring mount. As such, once we got the rear bed out of the camper, the rear floor was bouncy like a diving board, giving us a good excuse to figure out how the floor was constructed. Turns out...not good.
This was one of the only trailers I can find info on that had a corrugated cardboard floor...like a cheap dorm room door. The reason it was so bouncy is that it was supposed to be supported by the walls, but you can see how 50 years of sitting worked out for that idea
At least I always have lots of help from my stalwart nail/staple pulling expert.