My 2012 razorback 2650 toy hauler the floor has started to sag in the middle. You can't really see it but you can feel the hump near the front and on the sides. It sinks down about 3/8"-1/2". Shoul...
I'm actually in Elkhart, IN right now as I just had a new ramp door put on my 2014 Grand Design Momentum. We full time in the rig and unload/re-load a Goldwing at each stop which weighs about 1000 lbs. I experienced softness along the center of the door a so much so you could feel the floor flex when walking on it.
These doors are expensive, yet are just foam sandwiched between 2 thin sheets of plywood covered with the non-slip surface inside and the exterior laminate outside.