Hi Russ, no, not worried about a burn-down. The wood burning airtight that is now on backup duty ran at least as hot as my oil burner. My tent is 15x14, lots of uninsulated space to heat.
Ya, she heats up real good. So far it's been fairly warm when I've been at my tent camp, so I've not had the chance to "open her up" in a real world situation. She runs nice 200-300F when needed though.
It's 1.5hrs from home, so I don't get there as often as I'd like. But on my driveway at home (test run) she easily ran 450F.
My own touch is on the "manifold" and a few other places, but the real star is RS's great burner pot design. it. just. works!
Cheers, G.