I place an L-shaped piece of aluminum foil on the hot side of my stovetop thermometer's needle before I go to bed. In the morning this "soldier" tells me the max. temp. my stove got to during the burn. My Resolute likes to cruise @ 550 but it sees 700-750 at the peak of the burn. I plan to replace the warped upper fireback and combustion box next time it's warm enough to shut her down for a day. I'm curious what effect that will have (for $275). I'll post results here somewhere.