Burns have been an epic fail, only getting 100 F on top of drum. tearing down to base. Only thing i can think of is we just built it with only cob. Going to break down the cob this time and add charcoal and actually make forms . add the charcoal to cob and make actual fire brick from the forms. hope this does it getting so tired of this, don't know where I am getting the strength to do this every day. We are up to Rocket mass heater V1.09 and am just spent. one man team with the wife as foreman now so maybe you guy's can understand where I'm coming from. She hasn't helped at all on any of it yet she want to try this and that, and I'm like I tried that back in ver 1.04. Thought for the day, is living off the grid suppose to be this hard lol