The used Mark II I bought recently had a warped grate that I must replace. Does this always mean the stove was overfired, or will the grates warp from normal use over time?
Also, If it was overfired, can any hidden damage occur? I cannot fire the stove due to the incompleted chimney, but I was worried that it may be possible for too much heat to cause a crack, which could allow the firebox air to mix with the circulated fan air in the air passageway (air jacket), and get blown into the room via the circulator fan. Or the fan blowing air into the firebox.
Is this a far fetched concept? Are the Harman Mark stoves too well built for something like that to happen ?