I have a tarm solo 40 and burned roughly 3 cords so far this year (first year using it) My wood supply I would say is decent, It has been cut and stacked for almost 2 years, some of the bigger pieces were just split this fall though. I have a fair amount of tar like creosote buildup inside the firebox, and on the door, is this normal? Some mornings the door is slightly stuck when I pull it open. I think it is becuase i put a little too much wood in it at night so in the morning I can just put more wood in with enough coals to get it going again. Is this bad for the boiler and will I need to get that creosote off everything come spring time?