We have a 2001 DS03 38' TS, got it new. We have had the windshield pop out (upper driver's side) three times. We didn't know anything about the x-bracing until two years ago. 3 summer's ago, when it popped out the last time, my husband, our friend and his friend, looked underneath the front and came up with a way to add additional metal tubes, welding them to the frame. My husband also added 5/8" plywood (glued and screwed) up under the dash area with additional tubes. He also removed our 60# tv and installed a LED tv. He also found that the thin metal strip between the windshields wasn't attached at the top or bottom - which he fixed. We didn't have any more problems for the last couple of years until this May, when a crack appeared in the pass side, near the side view mirror (almost looked like a wing window). We had the windshield replaced. Since we really don't know what the "x-bracing" is, I don't know if what we did is good enough or not. I guess time will tell. So, this shows that coaches under 40' have had this problem.
Rae Lampe