I have a USSC 6039 Harvester. I researched this stove and it seemed to be the best buy for the money. I started burning Pellets for the first half of the winter but I have found Corn to be cheaper now than the pellets so I switched to Corn. The corn was tested at the feed mill at 12.5% moisture, within the 11-15% the manual says. Its a medium size corn that seems to be pretty clean, I screened out a few stalks but not much. When I first burned it I got alot of clinkers so I added some Oyster shells. That has softened the clinkers and they don't seem as bad. The problem I have had is the fire will go out after maybe 6 hours. I have tried adjusting the draft fan but that has only served to blow out the flame after a few minutes. We only need to keep the stove typically on the first setting and I clean the stove often. What should I be doing to prevent the fire from dying every 6 hours or so?? Thanks in advance!