I'm in the process of opening an old style floor vent over my stove so the heat will rise through to the room above it. There is a realy old type of insulation in the floor. I hadn't finished the job, the vent cover was in place on the 2nd floor but I hadn't got the grate cover installed in the ceiling of the first floor. Long story short, somehow while the stove was running a little bit of that insulation worked its way out and fell onto the stove. Now there is a spot about 1 1/2 inches in diameter where it melted to the stove. I cannot get it off.... Any advice? I'm worried about using anything abrasive as it is a soapstone stove.