I just bought a new Soto Windmaster stove from REI in Alpharetta GA yesterday for full price. Today I took it out of the box and it has clearly be used before. The burner and stand are both heavily discolored which happens to metals after exposure to heat. Does anyone know if this particular stove gets test fired at the factory? I've bought quite a few canister stoves over the years and none of them ever came out of the box looking like this one.