lushy beat me to it. If all you need is a piece to fit when making a bed, plywood is the answer. Good idea cutting in two pieces.
A bit confused as to why Keystone thinks the dealer should handle their engineering screw up. Suggest you have another go at it or at the very least get one or the other to cover the cost of the plywood. I'd not let them off the hook that easily. Good luck.
Trailerless but still have the spirit
2013 Rockwood Ultra Lite 2604 - new family
2007 Rockwood ROO HTT - new family
2003 Ford F-150
4 doggies - We support Adopt/Rescue.
Sam, you were the best!
Cubbie, Foxy, Biscuit and Lily - all rescues!