Has anyone had a problem with black/brown stuff (if it is soot it does not come off with soot remover) staining their ivory Jotul? I recently had my Jotul reinstalled after a home remodeling job and not sure what happens when it is burning wood that causes parts of the stove to turn black/brown. More important than removing the stain is to discover what is causing it. The smoke alarm did go off and a chemical smell was there but no real smoke in the room. The short 24" flue was spry painted with paint that the hardware guy said was heat resistant. The flue connection, flue and chimney have been checked by a chimney sweep and that all looks good. HELP!!