OK, I have maybe what some might consider a stupid question, but I am a little confused as to why idling for reasonable periods of time (i.e 30-60 minutes versus 2-4 hours) at specific conditions is so bad for a gassifier type wood boiler. By specific conditions I mean correct draft and dampers closed/draft fan off such that combustion is inhibited in firebox. I have a Tarm Solo 40 Plus with Storage and have been up and running for a little over a hear now and other than a good coating of shiny creosote in the firebox (which I have been told by other users and the OEM is normal - was very concerned in the beginning), have no issues with creosote in my secondary chamber or flue. When my unit idles I assume combustion is inhibited since I have absolutely no smoke from the chimney and the metal flue section from the appliance to the chimney cement flue is cool to the touch (obviously not immediately but into the idle cycle). After much time spent on the forum with many members citing the benefits of storage and issues with idling I have become obsessed with proper loading such that idling time is reduced even to the point of adding a temperature controller and micro-PLC to allow me to time my firing and idle periods including counting number of firing/idle cycles. Also monitors temperature of boiler supply with time delay to drive an alarm buzzer alerting me when it is time to reload the boiler with fuel. I actually enjoy the tinkering and daily loading of the boiler. Have considered storage but actually think I might get bored only building a fire once or twice a day if that. In addition, what if your burn time for the storage capacity is say 3 hours and you miscalculate and add too much fuel after your storage is at setpoint? Would you not idle then for say the next 12-24 hours? Just trying to decide if storage is all that it is cut out to be and if for some maybe it is not the best strategy. Any thoughts?