Dh called, he's doing the deep cleaning (a little late but it's been a crazy year) and he found a bit of surface rust starting behind the bricks. What's the best course of action here? I can't imagine many hi-temp paints could really stand up to interior stove temps. We'll at least hit it with a wire brush, but is there anything we can coat it with after that? I'm not home to take a look or take pics, I can do that later this evening if it helps. This is in the Republic (2 burn seasons old).