I recently installed a big ol' Blaze King. Just tried burning in daylight, and I am noticing a good bit of smoke (yes, smoke not steam) coming out of the chimney. This is an hour after starting the burn, the stove is hot, the cat probe thermometer is at 1600*, the stack thermometer is down to 250*. It seems to me that I should be in the zone, but the visible smoke exhaust says otherwise. While I have no complaint about the output of heat, I feel I am not running as efficiently as I could and should and, more important, I may be coating the inside of my flue needlessly. My firewood is definitely dry and seasoned. The draft is good. I am burning in a Blaze King KEJ 1101. It was a cheap find on Craigslist, age unknown, age of combustor also unknown. What might the causes and, more importantly, the remedy be? I know the cat is engaging (due to the measured temps) and it is glowing. Maybe it's long in the tooth and needs replaced? I don't know what else it might be, but I thought it might be good to engage wiser heads than mine.