I have a Mach3 with a NVCMV2.1 controller. I have configured the ports and pins as the manual says and can't get the spindle outputs or the normal outputs such output# 5 to operate. I am using "DoOemButton(235)" to turn on output#5, and it won't work. I have changed the driver, changed the USB cord, I have checked and rechecked the ports and pins setup. I must be missing something...Please help