I have been reading the forum extensively over the past few weeks. And now the cold has finally set in so I should maybe learn some more my neighbor gave me a daka 501, and I have that heating the shop 6" about 5' into a clay tile lined block chimney . I picked up a arrow insert for the house and that has been working great. I "slammed" it in , 8" pipe 3' long going into clean inspected clay tile lined chimney. I'm burning cottonwood slab wood from a neighbor with a saw mill. Does anyone have experience with these stoves or any tips for burning slab wood ? Or any suggestions for a better heat