We have a 2014 hemisphere light 5th wheel and have had a few problems with the dometic AC - now replaced, and now with the dometic refrigerator door falling off twice and the freezer door falling off once in the past 9 months. Seems the plastic hinge on bottom of the door that fits over the hinge pin breaks and the doors comes off. Each time this has happened the 5th wheel has been parked at our home, I walk into the RV and there are pieces of the plastic hinge part on the floor. The door has been closed shut each time, no one swinging on the door or anything like that. Anyone have any ideas as to why this has been happening?