I don't yet have pictures of this to share, but it is pretty easy to imagine.
From the day we bought our 2350, when driving our rig on bumpy roads, we would get this strange banging noise in the area around the DVD player. It drove me nuts, nuts, nuts. I had my wife look high and low, but we never could find the culprit until this past trip.
What is it? The roof top antenna.
When we got home this past week, I got up there and added stick-on felt pads, the kind you use to slide chairs on wooden floors. I added them to the feet of the antenna and also on the edges of the wings. I have not driven the RV on bumpy roads since so I cannot say for certain that I resolved the problem. But it's a good prognosis.
ADDING: Taking a trip the following RVing season, the felt pads resolved that terrible banging for good.