Hello all. I'm new here. Have 100's of hours sharpening and I'm still very much a rookie. I have pretty good results and long as I stay off my 12k Shapton stone. I use a KD 1000/6000 and get the knives pretty sharp. When I go to the 12k it no longer feels right. Kinda skipping a little and the edge almost always dulls. Also I will feel the bur that I thought was gone by now roll over back and forth and the smallest of a "hairlike" metal strands break off and the knife is pretty dull then. It's like I'm breaking the edge off? I've tried light pressure, moderate pressure. Always very light contact going forward and the pressure comes when dragging the blade back. I use all kinds of knives but I specialize in Old German Wusthofs. I do great as long as I don't use that 12K stone? Any ideas what I'm doing wrong? I'm sure it's a rookie mistake. thanks in advance!