I am almost done, and would be if the self tapping screws for attaching the liner to the insert would actually self tap. While taking a breather, I thought of something. The face of my fireplace is painted. Will that paint burn? I’m especially concerned about the area behind the surround. Following advice on here, I built what is essentially an air tight block off plate so there will be a lot of heat back there. I don’t recall ever seeing a post about this. Did I screw up? Picture is attached.