This is literally the first time I've used anything except the 2k on a razor I think it was just a good razor and I went paranoidly slow.
I don't mean there is a rough spot I mean my 8k has a smooth but resistant stroke, the 5k is smooth as glass like I'm using a very thin oil. If I didn't know I would think the 5k was the finisher it feels smoother than my select coticule or my LM, but the scratch pattern is distinctively coarser. It's very odd.
Also i am assuming I have the american formula since I got them from chefsknivestogo