Hi, I Would like to rebuild my living room, wood burning fireplace. Any advice would be great. First off: Money is too tight to hire a pro. I'm fairly handy and I would enjoy this. The damper on my 1952 Superior Heatform is broken. Overall, the damper seems fairly deteriorated. I would like to build a new firebox/mantel/hearth, for a wood burning insert. OK, so after I remove the old stone face... I would like to raise the firebox off the floor and build a nice hearth. ...but I don't understand the Heatform. Does the heatform support the chimney? Can I remove chunks of the heatform as necessary? I also would like to open the firebox area a couple inches taller, but am concerned about damaging masonry that supports chimney.