Hello everyone and thanks for helping me out the past two years. This is my first post, I have just installed (Sunday)the Harman XXV after two years of going back and forth between a corn burner or pellets. After much research and discussion I relized that for my situation, corn was going to be just as much work as heating with firewood. Also, I just could not bring myself to utilize a product so heavily subsidized by the goverment. Even when prices were low they were still inflated thru subsidies. Anyway, I just sold my wood stove two weeks ago after eleven years of use. What a relief that was. All I can say now is WOW! what a change. Same heat=less work=more play. My question to all of you is what relation does the feed adjuster knob have in relation to the "one inch" of ash on the front of the burn pot, which indicates maximum heat output. How does a setting of 5 differ from a setting of 3? So far I have found that a higher number (6) means less ash then a setting of (4). Does this sound correct? What do fellow XXV owners have there feed adjuster knob set at? I am burning "White Lightning" pellets, if that means anything. Thank You!