Right. 6 X 2 is perfect. I have a few very hard La Grise and what I think is a La Verte (because its sort of olive green) that don't auto-slurry, feel like glass on water, and provide excellent edges.I have been reading up on that as well. From what I gather, is that some people believe that it(diamond lapping) hampered their stones honing capabilities, while others have said that all it did for them was change the way honing felt, but performance didn't change much. Some said that going up to 2k grit w/d will fix it mostly. Others mention using a slurry stone or just honing with and using it will mellow the surface out again eventually. I have a small 6x2 stone and I have been using mine with just water or oil so I am really gentle with it. I have not noticed any slurry forming at all. I think it(my coticule) may be really hard one. I hope I won't have to lap this for a while.