everything is wired, but how do i tune the motors using mach 3

[deannos]

Easy, --total number of step / pitch

In you case for the 16 x 2 axis that 1600 / 2 so set to 800

For the 12 x 1.75 that's 1600 / 1.75 so set to 914.2857

well that is easy, next question, should the cutter now travel the correct distance as in the gcode. If not how do you set that please