Mapping the leadscrew, how does one do it in Mach3? I couldn't find anything in the mach3 manual, but then I might be using the wrong search term. I have heard it is a long and laborious process, but I have also heard it is worth it to get a nice accurate machine.

Machine is a "Joe" style machine that is currently being updated and modifies. Current screws are acme 1/2-10, these will be changed out and will be replaced with either acme 1/2-10 2 start, or nook .631, .200 pitch double nut ball screws (rolled screws). (I'm leaning towards the ball screws now that I know what my tax return will be).

If possible a step by step process would be preferable, especially where the mach3 data input is concerned (unless it is so obvious a 6 year old can do it).

Thank you