Excellent post leadog. Paul, I did forget that when I had drier wood with that burn scenario that I did set my timer for alittle over 2hrs. I'm use to what I'm setting my timer at now for the past month and a half seeing I have alot wetter wood. Paul do you yet understand why we use storage? When I burn a load I will never use all the btus generated by that one 2-3hr burn in that 2-3 hr time frame. I got to keep the fire burning full out to keep the combustion temps up so I need to dump the excess heat somewhere. And yes, I will lose a very,very little heat due to storing and circulating but I more than make up the difference in the complete and total combustion of that load of wood. When owbs cycle and have no refractory they loose alot up the chimney. That alot is completely burned in my boiler getting all the usable heat out of every ounce of wood. And the only way to due that is a constant full burn cycle. Moisture content does have something to due with slimey creosote but the majority of the slime is because the aromatic hydrocarbons cool and condense on the walls of the boiler water jacket. The boilers that don't have as much creosote are the ones that also run stack temps 900*f and above. Theres alot of usable btus in a 900*F+ stack temp. Mine runs about 240 and that with 2000*F+ in the secondary chamber I am having trouble believing that your boiler, when cranking out 400K-500K only has a stack temp @500*F with 25 gals of water. Another great addition of the garn system is that when there is a power failure at a full burn nothing happens( as long as you don't open the door!) The water storage Incorporated around the firebox absorbs any and all heat that will be generated right after power age. Thats the beauty of onboard storage. Now when yours has a power failure at full burn I have to agree with leaddog in that I think your unit will be ready for the scrapyard. Paul glad you calmed down and stopped shouting, but you still ain't going to sell me on one of your units.