Hi there, I moved into a house a few years ago with a Clayton model 1600 set up into the central heating of the house. This year the burn box split on one side. I welded it, installed new fire brick on that side as they were crumbling. Still having troubles with it. After some mucking about I checked temp. the side that failed gets significantly hotter than the other side. IS this basically a matter of the steel got fatigued or something else? Are these stoves prone to that or have I been doing something wrong in operating it? Appreciate any input.