I need some professional help (or so they tell me), I've read as much as I can about the issue but just keep going around in circles. I am running Mach 3 on a Vista machine controlling a G540 running steppers on an X2 mini mill, I HAD everything running smoothly until I tried to add a 4th axis (a lathe head with a 4th stepper) it worked ok except that it would randomly miss steps on the A axis and I couldn't figure out why. I had other projects piling up so I took off the A axis and set it up like I had it but now it's missing steps on the Y axis??? There is no binding in the ballscrew or ways, the X and as far as I can tell the Z axis are ok, I reloaded Mach and tried to set everything as close to original as I had it but that didn't help, it will do it running known good Gcode or even jogging it with the Xbox controller, seems like a program problem but if I knew what I was talking about I would be able to fix it myself?
? any help would be greatly appreciated, Thanks Jim