Frame problems?? Don't get me started... :M
Some TTs have a frame that has I-beams that are 3 pieces of mild steel welded together and look like a "regular" rolled steel I-beam. These are weak and flex a LOT. I'd love to get into details, but I can't. I do not know if R-Vision trailers have them or not. If it does have this type, it will NOT stand up in the long run and I would fix it up and sell it.
Even if it has a regular I-beam frame, look carefully above the spring hangers and see if there are any cracks in the vertical web. Frames with regular I-beams may not stand up to a lot of rough & bumpy roads. Lippert, which makes the vast majority of TT frames, does not make them all alike and some have more re-enforcing compared to other makes/models. If you want a frame that will stand up to harder usage, Nash and Outdoors RV have an off-road certified frame.
If a frame flexes too much, the aluminum superstructure can be damaged. This photo is what I found in our last TT with a weak frame and shows a failed weld. The weld is poor to start with. I only accidentally found this while doing a mod in the pass-through storage. This was after only a few months or less of ownership and with few miles. Most mileage (around 2K) was from Indiana to the west coast.
I would take the trailer to a reputable frame & axle shop with experience in TTs and get their opinion. If you look at other TTs, the welding of the A-frame to I-beams just doesn't look adequate and the weld quality is not that good. The second photo is an A-frame that came complete failed.
Not surprised to hear that cabinetry failed. They are typically held in place with a handful of screws or staples. I was looking inside our microwave compartment last week and couldn't believe how little there is holding the MW and upper cabinets in place. Added some more screws.
