You can try different routines with different stones. Maybe water only finish, maybe light slurry. If you aren't using tomo naguras that may be what you are missing. Before you buy another stone get 5 or 6 different tomos and see what you come up with. Experiment with the tomos, 1 slurry, 2 slurries, maybe refresh it. My jnats took off when I got a bunch of tomos. It may be just what you need. And sometimes a harder tomo worked gently can raise that very fine slurry you need off the base stone. I find that this thing just keeps going and going.