I'm looking for info about them too. I've got an old one I've been using for fifteen years or so, and one of the doors is warped. I knew a guy who had one with un-warped doors and he could choke that thing down to extinguish his fire if he wanted. Mine wouldn't pass the "dollar bill" test, hell, it wouldn't pass the silver dollar test. I've got all kinds of stove rope (gasket material) glued to the doors, even got a couple pieces wired to the joint between the doors, and pieces of stove rope stacked on top of each other to fill the biggest gaps. Still when I get a good fire going and try to shut it down for the night, you can see a red glow from underneath the warped door.
The ones I've seen had aluminum doors, maybe that is part of the trouble.
On the positive side, it gets hotter than a pistol and throws a lot of heat into the house. It's been almost my only heat since as long as I've had it, warming a 2000 square foot, poorly insulated, poorly weather sealed home. But it rarely gets much below freezing where I live, and if you want to maintain heat you'd better have an ample supply of wood and prepare to tend the fire every four to six hours or so. I also use a manual damper on the pipe above the stove to increase burn times and slow the draw. Puts out a lot of smoke, but no neighbors to complain about it where I live now.
