The DOVO green paste is a lot coarser than .5 crox, I believe in the region of 6 microns. I used it myself with good results until I got my Shaptons.
Marc, if the paste does not get the edge where you want it, my offer for free honing still stands. Again, I'm not an expert, but I had one heck of a fine shave this morning with my home-honed ERN