Well I note that the manual recommends a bit of pressure when setting the bevel and then lightning the pressure once the bevel is set and you go to sharpening. If I were working on that one, or any really, I like to have an eye loupe or even a microscope to better see my progress.
With the coticule it would take some patience and persistence and certainly slurry for the metal removal stage. If you haven't seen it here is a honing tutorial in the Wiki that refers to honing with the yellow/blue specifically. In that particular tutorial a DMTE was the tool for bevel setting. That is an ideal bevel setter IME but if all you have is the coticule a slurry has been found to give more cutting power and would be the way to go to reshape the heel before you go to diluting it as you sharpen. :gl: