Bays,Water, Insulation,Slideout trays, 450LXi

[davidbrady]

Thank God for stainless. I wonder how much weight you took out by removing those soaked poly-fiber mats. I'd be tempted to not insulate and just let the dead air space between the marine plywood and the stainless sheet be the floor insulation. With nothing their but a few drain holes water retention should be greatly reduced. The M450 is quite a bit different from the M4RE (4500 Express). Here's a pic of the M4RE:

I like the diagonals better but anything there certainly helps in distributing front subframe forces. My Prevost uses bigger tubing all around, 1.5"x3", and diagonal bracing up front, but then I don't have the 9" c-channel backbone of the M450.