Yeah, the pad's values change in the test program and they seem accurate. -2 AXIS appears on all of the analogue inputs when you try to change them, so left stick and triggers and presumably the right stick too.
TURN_L2 = -1001.25
TURN_R2 = 1001.25
THROTTLE2 = -1003.25
BRAKE2 = 1003.25
SPECIAL2 = 1011
ACTION2 = 1012
THRUST_U2 = 1010.25
THRUST_D2 = -1010.25
REAR_VIEW2 = 1014
CHANGE_CAM2 = 1013
PAUSE2 = 1018
[JOYPAD PORT 2]
TURN_L3 = -2001.25
TURN_R3 = 2001.25
THROTTLE3 = -2003.25
BRAKE3 = 2003.25
SPECIAL3 = 2011
ACTION3 = 2012
THRUST_U3 = 2016.0
THRUST_D3 = 2015.0
REAR_VIEW3 = 2013
CHANGE_CAM3 = 2013
PAUSE3 = 2018
[JOYPAD PORT 3]
TURN_L4 = 0.0
TURN_R4 = 0.0
THROTTLE4 = 0.0
BRAKE4 = 0.0
SPECIAL4 = 0
ACTION4 = 0
THRUST_U4 = 0.0
THRUST_D4 = 0.0
REAR_VIEW4 = 0
CHANGE_CAM4 = 0
PAUSE4 = 0