I feel kinda silly asking, but I have no idea what you all are talking about sometimes. I went from a Franklin smoke dragon / wood incinerator to my Woodstock Fireview cat stove. What is the primary and secondary air and burn tubes you people speak of? Are there multiple levers? Is it complicated? What do they do? My first stove burned at 100% until it was empty and cold with no control and the Fireview has only an air control and cat bypass. How do you run theses stoves? What do the tubes and two air controls do?