I am thinking of getting one of those Vista CNC controllers and I need a mode where my program is set to run and as I turn the encoder, I get two things, the program is running and in a ratio that is dependent on how fast I am turning the encoder. Turn the encoder fast you get 100% of program speed, turn it slower and the feed slows down. I need to be bale to set the spindle speed separately in the speed override so I get a happy median for slow feed and programmed feed.