I have a vermont castings vigilant 1 that I had reduce the flue size to 6 inches. I am trying to find the best way to run the stove. When I get the flue temp to the operating zone on the flue thermometer and start to close it down the flue temp drops. Do I want to pay more attention the the temp of the stove or the temp of the flue? I am burning birch, beach and ash and seem to have trouble keeping a hot fire going. Any advice is welcome, I am trying not to use my furnace this year and want to burn safely and efficiently. How much heat do I lose running the stove with the damper open? Will I burn a lot more wood if I keep the damper open to keep the creosote down?