The valances come off with a #2 square drive screwdriver bit.
Remove the screws on the sides that attach the "L" shaped brackets to the inside edges. Don't attempt to remove the ones into the side walls.
If this doesn't work send me a private message-- We can discuss it over the phone.
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.