Now Im very confused. I had been burning my Harman XXV at feed rate 4. which seemed ok but really went thru the pellets fast. I have dialed it back to 3, and turned the room temp fan down half way between high and low. Im going thru much less pellets and the room seems to be maintaining a good temp. So what is the difference in feed rates?! This morning when I was checking on the stove I could see red hot pelllets down in the ash pan. ugh... any insight you guys can lend me? Im using Energex premiums.