[Dexter]

Some would say we all have a screw loose for carring our home around on wheels. But to your problem. As long as these motor homes are made of wood and aluminum you will have screws work loose from the twisting and turning of the entire frame while going 55-70 mph down the road. A simpler cure is an old carpenters trick I leared as a boy, way back when. Keep a supply of wooden tooth picks around and when a screw works loose fill the hole untill they stick and try the screw again. You can also add a little wood glue to the tooth picks for a fix that last a little longer.