Pacific Scientific Nema 34 Brake and Encoder removal

I bought a PACSCI NEMA 34 PowerPac from ebay.

ebay # 2577232501

PACSCI # K32HRHM-LDK-NS-02-50

I could find no info on the PACSCI site or here in the archive on
this brake unit. I sent a request to PACSCI, but really need a
quicker response to test this unit and rate the seller.

Is this a standard PACSCI brake/encoder installation? Nothing similar
is shown in the online stepper catalog.

What voltage do I need to apply to release the brake?

How do I remove the encoder and brake? I removed the cover of the
encoder, but it doesn't appear to be mounted from the back.

I don't need the 1500 ozin this monster generates, and the torque
curves in the PACSCI stepper catalog look quite linear indicating
about 600 OZIN at 5A. If I drive this at 20x microstepping, 4.5A
(overdriving to 6.3A at higher speed under acceleration) and 70V with
my Phytron drivers, can I expect smooth accurate motion? I have read
mention of issues with running steppers at lower than rated current
during microstepping.

Thanks,
Mark