Drivetrain stalling(?) Is this electrical or mechanical?

[gorrilla]

Make sure you have 12volt power to the digital sidecar from the PD board!

We had this same problem and spent five days taking everything apart to fix it.

it was getting 5v power from the CRiO cable, so we'd go slow and everything would work, but once we used more current than was going through the white cable it would stall, essentially turning itself off from lack of power. we also fried a jaguar doing this.