Hi, I just got the Nova sharpening center but the instructions suck. Can anyone point me toward some good directions or explain how the fingernail jig is set for angles and sweeps? It doesn't tell you how far to extend the chisel out, how far to pull out the support bar, or what the numbers are on the jig. I assume they are angles, but it doesn't say. If anyone can help I'd be much 'bliged.