Jamie we have the same thing in our BigFoot
. when we open the door,( after just traveling down the highway a few miles), things fall
on the floor. Before, we kept the door from opening while traveling, we would find things on the floor and the door standing open, even with a good door catch, ( very hard to open normally ) We have the door held shut with a vinyl strap 1 inch wide by 1/8 in thick with a snap on the end.( bought at the RV store). It hooks onto the top face of the door and over to the molding around the entrance door. We are going to buy the retainer bars that go across the front of the shelves, to keep things in place, seen them at the RV center, just need to measure the opening and buying the right size. They come in many widths.