I have had my mill setup for about a week now with the same settings and haven't changed anything. All of sudden today when I go to run test run a file I'm getting some weird stalls.
For some reason, when backlash comp is enabled in mach3 one of my motors will randomly stall if more than 1 is moving at the same time. For example, if I'm moving along the Y axis and I then go to move say the X axis at the same time it will randomly stale the Y axis but the X will keep moving. It makes the same noise as if you hit a limit on the table. I could be moving the X axis back and forth and then try to move the Z and it will randomly stall the X. I could let up and it won't do it 3 or 4 times then it does it. It stops if I turn off backlash comp which is weird as I've been cutting and playing with the mill for the last week and it has never done this.