I am attempting to burn Bit Coal in an old Multi-fuel (wood/bit coal) Buck Stove Insert. The Model is Regular Buck. (this is a 1980s stove insert). The coal grate kit that buck made for this stove only exist in history because I cannot find one anywhere (all though my stove already had the coal liner when I purchased it). I purchased an aftermarket coal grate that would fit in the stove. I am buring baseball size bit coal and getting mixed results. I've got the air in-take wide open and the damper mostly shut and it is burning about so/so. The coal is burning well, but is not putting off the same heat that wood would put off with the same settings. When burning wood, I could just about close the in-takes and it would run you out of the room. I could heat my entire house when burning wood, however, I am having an issue doing so with the bit. I know it is something that I am doing, because I know coal just burns circles around wood. Any help would be appriciated. (Also, if anyone has one of those kits made for this buck stove, let me know and we will talk).