OK. So here I am. I just had a brand new Harman Oakwood Stove installed today and I am a bit lost, possibly in over my head. It is a non-cat stove but has Harman's afterburner in it to reburn the smoke and gasses. I got a nice hot fire cooking, and then closed the rear damper baffle (as instructed to to in the instruction manual) to get the draft to take the smoke thru the firedome afterburner. Now, the stove shoots out a big blasting explosion every 4 minutes or so and smoke poofs out into the living room. Anyone ever experience this? Anyone able to help me out here? Yowzers.....did I just make a big mistake buying a woodstove?