I hope someone can help me. I'm burning some oak which was split in April and seasoned through the summer. It fires up right away on hot coals and secrets no moisture and by all accounts appears dry and good to burn. My "problem" is that the wood breaks up into red hot chunks as it burns and eventually it piles up so high that I can barely fit any additional wood into the stove. This causes the stove to not burn as hot as I would like, so every few days I shovel out large amounts of black chunks which is extremely inefficient. Last night I kept the stove's airflow all the way open to see how far down this heap of coals would go down. The result is that it did burn down quite a bit but the house is cold now. Other wood I've burnt goes right down to gray ash. What's up here ?