I had a 6 log fire going last night and the top fire baffle was glowing red where the air holes come out of the secondary's. You can see the little red lines in the pic. Now they are new baffles that I put in yesterday. They were replacements for ones that I had that were shorter. Do you have to break in baffles or the glow is because it's getting nice and hot for the secondary's. Which is a good thing. My old baffles never got to the point of glowing. The new baffles that napoleon replaced with seem much heavier then the old ones. The inferno stove top magnet topped off at 600. I had it at 600 before with the old baffles but never got that glow.