OK All my Zulu-Grey arrived last week - very nicely packaged. I checked its flatness by first lapping with 600 then lapped with 1500 wet paper. It was perfect.
Decided to do a touch up on my Williams. I used the stone with water and a touch of soap in the water. After checking the progress under my loupe, I decided to bring up a slurry - I used some 1500 paper - and took the razor a step back to make the edge consistant to the Zulu-Grey. I worked my way back to water only, lapped on Crox on Balsa, then Crox on felt, and finally stropped on my Roo strop. I gave it a shave test - read full shave - this morning. The edge was wonderfully sharp and without harshness. I am NOT a honemeister and I expect as I get more experienced with the Zulu-Grey, I will achieve an even sharper edge. The shave was better than my professionally honed razors that were finished on a Jnat. A big THANK YOU to Mike for making these stones available.