Thanks for the info Joe. My TPO roof is stapled to the outside of my Filon. To pull the side back enough to replace the luan, I would have to replace my roof. Do you remember the particular urethane glue that you used? I have about decided to repair the side using luan. The front and bottom of the nose, to run a sheet of alum from the top to where I cut the Filon underneath. I would pop-rivet the Alum to the Alum frame. I would then glue the Filon to the Alum. The challenge would be to get the Alum Flat. Not so much a problem on the front as it will be on bottom. I will probably add 30 to 40 Lbs extra to the nose, but that is spread out over the entire nose of the camper.