When people say a Chinese 12k is slow cutting, what exactly does that mean? Does it mean if a usual 12k takes 20 strokes, the Chinese will take 50? I just got a Chinese 12k for touch ups, and i swear this thing isn't cutting or making my blades any sharper than they were. Am I doing something completely wrong or is this somewhat normal for this stone? I seemed to get much better results when i was using the poor boy method of newspaper.