So I loaded about an hour ago with 3 large splits. The temp above the door is at 520 with the air 80% or so closed. I looked outside at the chimney, and there is still some blue smoke coming out. I did not expect that with the temps I was at. The glass is relatively clean and the wood I am burning i think is pretty dry. I have never gotten the stove to you about 525 or so on the door. Why would this be and what is with the smoke?