Bridgeport serie1 retrofit motor problem

Hello:
I have a sound logic board that is conected to Gecko 212s being run
with Mach2 turning Bridgeport superior stepper motors
I've managed to get the axies moving. The motors are a little anemic,
I'm wondering if there's another way to wire the motors or configure
Mach2 to get more power from the motors. I'm running the superior
stepper motors at 56 volts in a parallel wiring config. any ideas would
be great.
Thanks
Patrick O'Dowd