I believe they are pololu DRV8825. I did try swapping the driver, as well as using the y-axis output for the x-axis. Tried turning the driver up and down. Enough to where the motor was severely torque limited by current. And over enough to where I could hear it whining. Around 0.7v….whatever that current limit ends up being. Forgot the equation for the DRV8825.
I also rewired the motors a few times to verify it wasn’t a bad connection. And again when moving around the motors.
Pulled the motors and verified they are turning opposite of each other, obviously.
These are the Kysan steppers rated at 76.4 oz-in. Plenty of torque.