So I bought my first stones (Shapton Glass 3 Stone set - 500/2000/16000) and practiced on a few old knives and then went to work on my Masamoto VGs. Everything went quite well until I got to the 16000. I was using the method of sharpening in both motions - towards and away from the edge. If that makes sense. When I got to the 16000 grit stone both of my knives kept catching on the stone when I was sharpening towards / into the edge. It didn't happen on either knife on either of the more coarse stones. It obviously wasn't great for the condition of my new stone. Although it didn't appear to have too much effect on the steel - I kept checking with an eye loop. Any ideas as to why this was happening? What am I doing wrong?