The recent thread on Arkansas stones promted me to buy a soft and a hard to preceed my black in the hope to go from bevel set to finish on these natural stones. I was surprised that these stones from a reputable supplier did not fall in the the specific gravity range for these grades. The seller promtly refunded my money so no issues there but I am finding it difficult to get a nice stone in the soft or wahita grade. Would I have better luck buying an antique stone marked soft or washita?