Just in case anybody else ends up using the same motors, here's the motor info and wiring configuration:
Step-Syn
Stepping Motor
Type 103-714-1241
DC 3.27 V
2.85 A
1.8 Deg/Step
Sanyo Denko Co. Ltd.
6 wires.
If you're holding the board so you can read the copyright notice, the motor connector is on your right, at the edge of the board. The pins, from top to bottom should connect to the wires colored blue, orange, red, yellow. Leave black and white unconnected. In that configuration, all appears to work properly.