I've experienced this on several occasions now, so it's not a fluke. Tonight I needed to put 2 medium splits on to kill time before loading for the ovenight burn. So I put 2 pine splits on a bed of hot coals with the air wide open. My soapstone stovetop temp doesn't really respond to this... it went from 400 to about 450, but what is surprising is how much heat pours off the stove with these small, wide open loads. It's 13F outside right now and my stove room is 78 - i mean it's hot! I'd like to understand this better. It really feels like the stove is radiating more heat on these short, small cycles than it does with big loads. Is there some thermodynamic magic happening? Does all the fuel in a big load absorb some of the radiant energy, where with the small loads it all gets directed at the walls of the stove? Just curious.