Just got my new F55, I installed Saturday did me first few break in fires though to Sunday. I did a full load from cold start Sunday evening the stove performed perfectly. I started a fire after work last night around 5:30 about a half load maybe less. That burned nice and steady at about 9 or so I opened the air up all the way to burn it down for a reload before bed. I had it fully loaded at around 10:30 with red oak closed the air down as soon as I saw good flames. The stove took off, pretty high flue 900-1000 on the probe and stove top Temps at 700+. I taped off the rectangle slot in the bottom of the stove that got the Temps from increasing but it stayed high till about 11:30 or so. Before I left for work i still had plenty of coals for a restart 10 hrs later. I guess I should have shut the air right away I guess. I ordered a butterfly damper should have it in a couple weeks! Until then cold start without I full load