I have a new 4k/8k, and I was told I would need to lap it. I also bought a flatting stone. I used the flattening stone first after penciling a grid on both sides of the Norton. It seems the 4k/8k was quite uneven (I could feel it when honing a razor, sort of a wave in it). I lapped it against the stone and then against some wet 600grit sandpaper so smooth it out (again using a pencil grid to ensure I'm getting it flat). Now the stone feels rough when I run a razor along it. The 8k side is worse than the 4k. It seems pretty flat though and I am getting a lot of suction on the sandpaper, just damn rough.

Is there any way I can get this thing smooth?