I just can't find a way to do it.I'm doing a roundover on two edgese. The tool starts at the top for the right edge, but at the bottom for the left. I suppose if I chose "Conventional Mill" for the left it would reverse and start at the top, but then I'd be cutting the wrong way. Maybe because I've chosen "Zig and Zag" it doesn't matter? Is that why the choice isn't offered?