Painted my Defiant as part of an overhaul/rebuild. Used a stove paint from a home center after wire brushing the surface. It took well and seemed to cure fine, however after burning for a month, there are primer gray colored patches in spots where the heat is highest; doors and side where the exhaust is routed. Just poor paint? The stove has not been overfired at all. Ran the stove all year last year with no similar affects.