greetings everyone, New member here and just purchased a 1998 Coleman Santa Fe for $450. Overall it is in very good condition with the exception of the roof (no big surprises there). There is no leaking from the roof and the camper is very dry (and it has rained A LOT here in FL recently). The ABS layer is very badly cracked and delaminating all over. I would estimate I could easily peel off over 80% of it with no effort. And, there is a sag at the end of the AC unit. I think the ABS is beyond repair and just needs to be removed. I am thinking about peeling off all of the ABS and coating the under layer with Grizzly Grip. Any thoughts on this? Also will try and gradually working the sag out by supporting the roof from the inside when it is down. Once the sag is gone I would like to add a second inside support, like the one which is installed in front of the AC unit. Any thoughts on this?