Was reading through some stuff today and found a tech memo from Vermont Castings concerning the glowing on the rear of the Everburn systems and the Resolute. They said that the flue gasses hitting the back wall at such high temps will cause this and that areas have been re-inforced to handle the beating. I know this has been mentioned before but, if my memory is right, there was a question as to whether VC actually said this or not. And they did I have the document in hand. So it seems that they knew about it and it was addressed in the manufacture of the stoves.