New to the board and just registered. I have a Tarm Solo 30 and have been heating with it almost exclusively for 5 heating seasons and for year round hot water. I built my own unpressurized storage and installed the boiler and piping as well. I am using a Johnson Controls DX-9100 Facilitator microprocessor and DDC valves and sensors to control the water flow - I did not use the Thermovar or 3 way diversion valves. Things have been going great until I discovered my gasifier tube/half round ceramic refractory had split in half last night when cleaning the bottom out. I tend to clean the bottom out each time I fire it and then clean the fire box out of ashes and left over coals and then pull them out in front of the gasifier where the flame tends to curl back towards the heat exchanger tubes and let them get burn up into fine ash to be cleaned out the next time I fire it. Just wondering if anybody had any other issues or breakdowns of the refractory gasifier tube and if so, at what age of the system did it go? I called our local dealer and they thought it was warranteed for 3 years, so I may be SOL. I did just push it back in as tight as it would go and fired last night as I am having a #2 oil avoidance issue!