I have an Enviro Empress .. so far I am liking it. I have several questions for you more exp guys. #1 on "high" should the flame touch the heat ex tubes? mine does just the tips, I'm an HVAC guy and wonder if this condition will harm the heat ex. # 2 the manual calls the circ fan "variable speed", is it a true variable speed, because I only notice 2 speeds low and high. manual also say 105 cfm that would be high, low is barely noticiable would love to have more air circ. I burned a few bags of lignetic green bag and the stove seemed to like them. 84 lumber has quit a stash of them, gonna go price em. Thanks in advance great forum