hello, I am trying to get used to my new Harmon TL300. I have found and read through many of the extensive threads on here to try and get a better idea of the stove, and the help has been great. However, I feel like I am getting very short burn times compared to what I was expecting, and I don't know why --- maybe someone can help me figure out if it is what I am doing or just my expectations I am burning seasoned oak - moisture content around 15%. I start by building a good fire and getting my temps up to 450 - 500 (I have a thermometer at the base of my flue). Once I have a good hot stove and a good bed of coals, I reload and close down my damper. When I go to bed (around 11pm) I reload the stove with wood and make sure the secondary burn is working and close down the air. When I wake up at 6am, there is nothing but some hot coals left. the temp on my thermometer is down below 300. is this typicall? if not what I can I try to extend my times? I thought I've read/seen people getting 10-12 hours burn times on this stove. thanks!