Hello, I need some help. I have recently purchased a house and the Heat N Glo model cbs 41 zero clearance fireplace is very damaged. the secondary burn tubes are degrading, and the floor bricks and back bricks are cracked through. I have rented this house in the past, when the fire place was in usable shape, and it was never very impressive. Shallow box always made smoke roll out whenever we opened the door, and the heat was never great, even within a 1300 sqft house. I have been looking for an insert that will fit within it or any other idea someone may have. I see lopi has a fireplace that is rated to fit within heat n glo zc. but after measuring the dimensions, it seems it most likely wont fit. Any help is greatly appreciated, as the propane has been being used too quickly for my liking, especially with three cords of wood outside.