Roof/fiberglass front cap

I had a Flagstaff, sister to the Rockwood I think. It was only on its first or second trip when the cap started to come loose on the top. I duct taped it until I got home and when I looked into it, I found that they missed the cap with the screws and it was only holding with the pressure of the seal. I did the repair on my own and discovered that there were big gaps between the Styrofoam insulation as well.