First year with a new EPA stove. Burning OK wood, which means I bought it from someone that said it was well seasoned. Had a full load in the stove burned about halfway down stove top temp at about 450, no flame just red hot logs, checked outside and no smoke coming out chimney. I hear everyone say that if you don't have smoke coming out of the chimney you are burning clean, is that true even if there is no flames (primary or secondary) in the stove.