I have a CNC 3020T model and I'm running Aspire 3.5 and Mach 3. I am having an issue with mach3 not progressing past code line 500. I also cannot get the gcode conversion right. the image is shifting significantly away from the origin (home) and the Z axis is way off. Is there a place I can go to check units? I specified mm when I set up the project in Aspire so I'm not entirely sure why it's not working.