Well after all the cleanup of the tubes and all we got a fire started and after a bit shut down the primary intake and low and behold we had some secondary burn in the back two tubes. And yes our glass had been getting pretty dirty. Still not seeing bit in the front. Do we need to shut down the primary always in order to get the secondary burn?
At what temperature is "after a bit"? What is the tempurature of the top center stone, measured at about it's center? If the stove is to cool, even with great wood, not only will you not get good secondaries, you will get blackened glass..