My craftsman only skipped because they needed a little oil! I was actually headed to the store (2 hours away) when I decided at the last minute to tear them apart. FYI, don't take the ball bearing out, cause it's a little, no a big pregnant dog, to get that ball bearing down inside while you try to get the internals in past it. After I oiled them, I put them in the vice and I couldn't get them to skip at all. And they have yet to skip since.