Dometic Microwave fell off wall while driving!

We just got home from a 8000km tour of the three western provinces and the three top NW states. Just before we left I was doing the final packing and cleaning when I happened to push on the microwave. It moved and was just rocking there. There was a narrow piece of plywood (maybe 1/2 ")under the unit and two screws holding the top in place. I pulled out the microwave and cut a much bigger piece of plywood for the microwave to sit on. When I attached the two screws I had a much better connection.