I've always used SS knives so that is all I ever sharpen. I bought a new Case Amberbone Medium Stockman with CV blades. I bought it for the sole purpose of whittling. I decided to put a sharp edge on it today for that purpose. My SAK I sharpened at 8-10 degrees to get a mean edge and did it in realitively short amount of time. But the CV seems to be a problem. Does it just take longer to reset the edge and get it sharp due to being a harder steel?