Picked up a used Randall model 8. Sharpening with. Lansky at 20 degrees. The bevel on one side is much sharper than the other. And yes I’m sure I’m using the same 20 degrees on bothe sides. I marked it with a sharpie to highlight the difference. Uneven grind?

[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]