I agree on that my point was shaving of blue with slurry was sharper than yellow with slurry i have shaved of blue many of time only after setting bevel on dmt then 4k n 8k n bbw light slurry and shave is fine no probs because blade was was sharp enough of the 8k i have shaved at each stage and if your bevel is set well enough you could shave of dmt may be a little rough but i have tryed it and your razor will shave not as smooth and not as much glide. I've just took a shave ready blade and honed once again on yeelow light milky slurry for 100 laps and result was passed hanging hair test shaved cheek area good but tash area and chin not good alot of resistants so once again slurry has droped level of keeness bart is right on he finds the same with slurry. i no if i now drop back to 4k and then 8k coti with water my razor will be back to normal.