So I bought an old barber hone on eBay and it has a different grit on each side. I went to lap it (wet sandpaper style, 600 then 400)... the coarse side -- no problems (it just took forever), but the fine side is acting up on me. After I got it nice and flat, I noticed that it wasn't as smooth as it was before! In fact, the coarse side now feels smoother than the fine side. What gives?