In our 15 MB, the bedroom floor is supported by an aluminium frame. The supports are tack welded together. Might have broke 1 of the welds. If you find the broken weld, you could use an aluminium strap and self tapping screws to fix.
2015 Ram 3500 SLT Mega Cab DRW, SS Nerf Bars, Andersen Ultimate Hitch, ATTA Freedom Fill System
Living Full Time in a 2015 39MB Tan & Burgundy Urban Clay/Caramel, Wineguard Dish, Res Fridge & Induction Cook Top, myRV Linc Remote, MorRyde SRE 4000, Titan Disk Brakes, 17.5 Goodyear G114's