My set up in on a PC and when you try to assign LEFT BRAKE AXIS and RB AXIS, if you try to scan for input, nothing happens, so the other options is to pick from the list. They include L Y, L Y+, L Y- and the same for the R axis. None of these work, so I have given up and now have my brakes assigned to the E button on the back of my Saitek yoke, which works fine, but loses the reality.