Anyone have any info on vintage Roper stoves? I just bought a house with a mid-to-late 1940's Roper with the middle grill, oven and broiler. The some knobs are a little hard to turn and I can't tell if the oven is calibrated. Not sure if it's worth putting the money into this to keep, or if I should sell it. If anyone has any info on this stove or idea of how much it's worth (or if anyone is interested in it), your advice is much welcomed. Thanks!!