An idea that may address the variety of questions concerning draft fan and stack temperature. Would not a K-type temperature controller using a stack probe with on/off control of the draft fan work to maintain a set stack temp and control draft at the same time? Example: set the controller at 380F with hysteresis of 20F. Draft fan "on" until stack temperature = 400F, draft fan "off," stack temperature falls to 380F, draft fan "on," etc. K-type temperature controllers and K-type probes are quite inexpensive, and this would be an easy modification to a system. An extension of this idea revolves around the barbecue temperature controller/ethernet/web control offered by Rock's. This product also will provide Twitter update reports in addition to web control. Other applications of this controller spill into many areas. Plus, a grill fitted into the gasification chamber will sizzle that steak to perfection in seconds!