Thank you Bill for responding to my post. I seem to be having problems submitting pics. Right now I am re-doing the test fire. 1150*f at the moment. I moved the damper down lower to the end of the chute and now the original damper is like a secondary damper. Im hoping this will help retain heat. The original damper was almost halfway up the seven foot chimney so maybe I was losing heat that way. If the kiln still stalls, I will probably be thinking of making burner adjustments. Thanks again and I will keep you posted