When I first got my C12k/PHIG I noticed that some razors would suction to the hone alot and if I stopped or slowed down the edge would "dig" into the stone meaning the bevel would stick to the hone and make the spine want to lift off and ruin the edge. I found that constant speed and alittle more water stopped it from wanting to do that. Once I got the hang of the stone I was able to get really nice edges from it.