Well I made some changes to the AOF system. I tried it out today and had alot better results. First thing I changed was the hole size, I changed from 1/4" pipe nipples to pipe plugs drilled out to 3/16". I also changed how my air dampers attach to the blower. The results were encouraging I boiled for about 45mins to heat up some water to clean the pans. The syrup pan was boiling the entire width of the pan and the flue pan was boiling very hard in the first 2ft the stack temp was about 650*. I am anxious to see how everything will work if I get a stack temp around 900*