I made some changes to my graph software. Click on this link for a live graph of the last 120 minutes. Works any time, always gives you the last two hours up to the moment of your click (I hope). In the graphs, the digital I/O is shown as a broken line - visible when on, gap when off. 'Demand' means that at least one heating zone is calling for heat. Flue and secondary combustion temps are divided by 10 to fit on the same scale, so 90 actually equals 900. I just started a fire at about 5:15. I'm documenting everything on this burn. For instance, my initial load was 48 pounds. I have pictures I'll post as well, showing the thermocouples and my fire building technique. I'll update this post with pictures, but for now you graph addicts can watch the burn as it progresses through the link above. These show the location of the two thermocouples, as well as the amount of creosote in my primary chamber and the lack of creosote elsewhere. Is this pretty much what everyone has with these boilers?