My first season with my PF100 and it seems to work pretty damn good. However, I burned 8 tons this year, maybe a little more. Not sure if this is because of the cold winter that just wont go away or its nature of the stove. During the really cold weeks, I would burn nearly 4 bags a day... is this normal for a 2300 sqft house with 9 foot ceilings? BTW, my chain thing is seized and I can not get it to move... any thoughts?