Spider,
The firmware on the ESC's determines which direction the motor spins. The ESC firmware is accessed through BLHeli configurator or passthrough. For whatever reason Arris wired the motors as I indicated and BLHeli is set with all motors in the "normal" direction, none in "reversed".
I'm not sure that it matters, that's the way Arris did it so that's the way I did it. I'm just throwing out suggestions that may help you isolate your issue.
Jerry