I was sitting listening to the sleet out side and all of a sudden my liberty made a noise that sounded like a gun going off and it scared the crap out of me. When a welded steel stove does this it usually means broken welds. Checked and found nothing. Shined a flash light in the stove where the secondary air channel is cracked and the crack is gone. Stove is cruising at 625. Anyone else have this happen to them besides BrowningBar? Its not the first time it has happened but hasn't happen since start of burning season last winter