Be great if you could find that some time, but no rush at all as I've figured out enough to get that bit working.

I'm banging my head on a brick wall at the moment trying to get an auto-zero Z probe macro working. I've managed to fix small problems in a bunch of the other probing macros and they're all fine - it's what should be the easiest one that driving me potty. I'll get there - I'm not letting a little bit of code beat me. I've written one for the CSMIO, and that didn't even use G31 so it should be simple...