We're using our coal stove that came with our house for the first time this year. This site has finally taught me how to get the darn thing lit, but now we're having trouble keeping it lit. It burns great for @ 2 days (& nights) but then slowly gets colder and colder and goes out. When I go to light another fire, the box is filled with @ 6 inches of ash. I'm following the site directions to shake only a hot fire and only shake @ every 4 to 6 hours and to stop shaking when hot red coals begin to fall into the ash pan. Is ash accumulation puting my fire out? Should I shake it more? More often or for a longer time (more red coals in the ash pan). Since it's so hard to light the coal, I'd like to keep the fire lit for weeks on end (it's cold here in Boston!!) This site has been very helpful so far, I'm hoping for a little more expert advice.