[coachm]

There's a plan for a piece of aluminum framing that will back the 8"x5" (currently flappy) bumper piece. It's not installed yet as there are problems with the lift that will attach to it. So there will be a piece of metal frame, then a 5x8" plywood backing with that portion, so I don't see how that part is not compliant with R21. It's entirely possible I'm missing something, though.