I just added a second parrallel port to operate a MPG. Finally got it working but now when I press the enable button to activate JOG, the spindle button flashes and the spindle goes to the speed in the DRO. The MPG is set up on port #2 and the serial is Com 1. There must be settings in Mach, or will I have to rewire the MPG to another output. Any Ideas.