I'm just getting up to speed on my X01 as well, so my thoughts should be taken only for what they're worth (perhaps not much). But my guess would be one of two things: 1. Because the table is small and the U12 holder is pretty big, a good portion of the holder ends up off the table as you start coming around the toe/heel curve. That makes it pretty easy to tip the holder right about there. Watch your hand placement and pressure to ensure the holder stays flat on the table all the way through. 2. You could have bent blades. Use a machinist's straightedge to check the blades and if necessary straighten them before sharpening. One issue I'm having is the surface finish in the hollow. I'm using the 1/2" spinner and getting even edges and a nice shiny surface finish. There are no ripples or crosswise marks of any kind - all the lines run the length of the blade and there is no sign of chatter. But the lines that run the length of the blade seem awful deep. I can catch them with a fingernail, which generally means they are a couple of thousandths deep. I don't really know if this is normal, since I never actually examined my store-sharpened edges quite this critically. Is this normal? Like I said, everything else about the edge looks great, and if the answer is "don't worry about it", that's fine - I could just use the reassurance from one of the more experienced sharpeners. And of course, if it is not right, any thoughts about how to improve it? Thanks!