Interesting....looks like a good fix. I had replaced my sheets of plywood (spacers under the camper belly) with pink foam board under the camper a while back, I think last spring. It looked pretty good after the first couple of trips but After about 5k miles since August I noticed the rear of the camper is sitting low, and I've determine ed that it has crushed the back edge of the pink down a fair amount. It seems the campers overhang aT the back (nearly 4') does rock down at least over time which isn't too surprising I guess. But in any case there is no doubt in my mind these big campers do some moving around and the overhang seems the most vulnerable place to flexing. Good you caught it and fixed it. That was one thing that was nice when I had the belly of mine open; you could inspect the framing pieces and at at thT time they looked good in the first 8'. Might be worth looking again next time I get a chance. The internal members might be worth looking at Yours if you can easily. Not sure if your belly pan is plywood or a thinner Sheeting, but I cut my thin sheeting Into three sections so I could open it up later fairly easily. But the part I'd most like to look at, the overhang, has to have a lot of stuff removed like the generator, to get to the sheeting.......it would be nice to get a look in There sometime..