Ok, this is the first year with the new insert....The problem being, its sorta mild and not much heat is needed on such days....I have the air closed at about 400 and later in the burn cycle its at 650, when that heat isn't needed....I am not packing the box all the way, just 5 or 6 dry oak and at night a BL split. How do i keep it from screaming to 650 when i want a slow 400 burn....tks!