I had a T5 installed less than a year ago, and it is proving nearly impossible for me to keep under control the last couple weeks. It is 40 degrees out. I have a 20 foot chimney. Just now I waited until stovetop temp was 290 degrees and my auber flue probe was at 360 degrees. I put in 4 medium large splits, loaded north-south, on a small bed of coals, raked forward. I made sure the load did not have easy air flow between the 4 splits. This is not quite a full load, as I have been struggling to control this stove on reloads, although it is close to a full load. After a couple minutes, flue probe hit 550 and I started closing the air in increments, with the flue probe at about 760, fully closed, 10 minutes later. The secondarys take off and the stove rockets to a flue probe peak of 1230 degrees. Most of the flame is in the form of a huge, aggressive, secondary. I could have sworn I did everything decently this time, rapidly closing, with a little less than a full load, after loading on a coolish late-stage bit of coals. What should I check or do next? Is it leaking air somewhere? We have never used the ash pan, and it is controllable on cold starts and partial reloads. One catch is I forgot the species of wood. MC% is around 20%. It is not maple, cedar, or doug fir... it is medium density... similar I think to doug fire, maybe a touch lighter. Is there a species of west coast wood that is known for going nuclear like this? Is the draft too high?