I have two Zulu Grey hones. I originally bought a 6x2 off the classifieds but then a 8x3 came up for under a hundred. Well the small hone is great but I'm having issues with the large one. There are these dark spots on the honing surface and during strokes a texture change. I'm at work so I can't post pics till later tonight. My hope is to lap past the spots/ inclusions. Has anyone had a similar experience with a Zulu? I wish they were not so hard since it will take a million years even on 80 grit.