My new QFire Cumberland is burning thru wood way too fast. I get about 90 minutes of burn on a full load before it burns down to coals. Here is my setup: 5500 sq ft home. (don't intend to use as primary heating source) assorted hardwood. Most was standing dead for a few years but cut and split this summer/early fall. No meter reading but seems dry. I have no problem starting it and get very little smoke or smudge when burning. Firing procedure: Open Primary and push in secondary for startup. Turn Primary down to middle setting after a half hour of full burn. At the same time, I pull out secondary all the way. Any suggestions would be appreciated. I like my new stove but it does not perform anywhere near the advertised 15 hour burn time at this point.