I am working on a CNC Tormach. Every time I set my zeros on the 3 axis machine, then try to do a test run of my gcode, the spindle starts and moves about three inches then prompts me to reset. I know this can probably be hundreds of things, but does anyone have any tips? I am setting my x and y to the top left hand corner of my work using an engraving bit and the z is set to the top of the vice with work removed.