Finished up my hearth over the last few weekends, took delivery this afternoon, and just finished up my first break-in fire. The single-wall stovepipe got up to 150, and stone stayed warm, not hot, to the touch, so I think it went well. I saw a little bit of water pooling up in the side-door framing when I opened it up, so the break-in fire was doing its job. Itching to get this thing going full blast, but held off the gas for the first break-in fire. Couple more ramp-up fires, and we'll be good to go!