I have just recieved a Chinese spindle in the mail. My lathe retrofit will use this as the spindle motor. I'm using mach 3 and a USB breakout board. The servo drive is a SDF20NK9X, and I am hoping someone can give me some tips on setting this thing up as a spindle motor ( in speed mode) and then switching to position mode with relays to Position mode. The instructions are quite vague. Thank you!