I am having a bit of trouble getting my stepper motors to turn at the moment, they are SY60STH86-3008BF from zapp. All they will do is partially step/stall but they have power on.

My System is:
5vdc PS
50vdc PSU
4x MA860H
4 X SY60STH86
and a no name ebay 5 axis breakout board.

I have comms with the breakout board and the led lights up at the relevant axis breakout point showing comms. The drive enable signal is measured at 5vdc when open circuit but if i connect a drive to the breakout board it drops to 1-2vdc. Pulse and direction show 5vdc
When I ask an axis to turn the motor stalls/steps a little bit/stops but has holding torque.

My motors are wired as follows:
Blue/White & Red = A+
Blue & Red/White = A-
Green/White & Black = B+
Green & Black/White = B-

I am certain mach3 ports and pins are set up correctly.
Any help with this would be great, thanks.