has anyone got good speed control using this the c6 board i am using mine with a c10 breakout board plus a kbic 240ds board hooked up to the dc motor on a cnced 7x12 lathe that has a 1 slot pick up sensor for threading that this lathe has done very good before i tried to control the speed i loaded the last lockout ver of mach3 turn once i ran the calibrate spindle i can not get good rpm readings say i command m3 s1000
dro reads s1459-1333 worked much better before i added c6 step and direction board only varied 1 to 3 rmp from command does the spindle calibration work?