Stealing parking, not water
Well my trailer didn't have the pink foam headliner, it has a polyester fabric liner like most new ones have and it pulled off easily. I thought the foam was in the 2000-2002 or so models. If you cant' save it you could take the trailer to an upholsty guy and put in whaterver you want. They are good at cutting out all the holes for fans and vents etc...
The only roof rib that was heliarc welded to the side ribs was the last one in the roof on the ends of the trailer. Mine was the one over the bed and bath area. Since it was welded I used a slide hammer and a dead blow to pound it back out and a porta power to push it back up. It was not broken just bent and the aluminum was pliable. I will try to post more pics in my photo album.
"No good dent goes unpunished."