We have noticed that many times when we get up in the morning our insert has a large quantity of coals that are golf ball size. They are black and the firebox can get so full of them we have to scoop them out. Is this because of we are burning wrong? Bad wood? Just the nature of the beast? Mixture of woods; some ash, some walnut, some white oak, and some maple. It seems like the ash produces a lot of coals. The walnut seems to burn away to just light ash. Any thoughts?
matt
matt