[ThisIsSparta]

We've had the same problem trying to program our robot for Mecanum wheels. The Axes of the rotation and strafing have actually switched somehow.
Reversing the motors in the Begin VI changes the direction the robot moves, but doesn't change the actually motions used.
When we tried actually swaped the wires of the rotation and the x-strafing axis, more axes started switching and it gets really confusing.
We also have not messed with the code in any way, and have verified correct wheel position.