[NFS Most Wanted and Carbon] LB and RB not work when use for shift down and shift up

[Resdryn]

My control is generic that uses the X360 for Windows driver. And the LT/RT isn't a trigger, so I can't use them with the precision of the throttle joystick. Because of this, I decided to use the preset that I used on the PS2: Accelerate and brake on the RS, turn on the LS, nitro on the RB, handbrake on the LB, gear change on the RT and LT. However, I can't get this to work decently on the MW 2005 and the Carbon, after all the RT/LT is not recognized when pressed (but only when it is mapped for gear shifting). ; In-Game controls GAMEACTION_GAS = XINPUT_GAMEPAD_RS_UP GAMEACTION_BRAKE = XINPUT_GAMEPAD_RS_DOWN GAMEACTION_STEERLEFT = XINPUT_GAMEPAD_LS_LEFT GAMEACTION_STEERRIGHT = XINPUT_GAMEPAD_LS_RIGHT GAMEACTION_TURNLEFT = XINPUT_GAMEPAD_LS_LEFT GAMEACTION_TURNRIGHT = XINPUT_GAMEPAD_LS_RIGHT GAMEACTION_HANDBRAKE = XINPUT_GAMEPAD_LB GAMEACTION_NOS = XINPUT_GAMEPAD_RB GAMEACTION_GAMEBREAKER = XINPUT_GAMEPAD_RSB GAMEACTION_SHIFTUP = XINPUT_GAMEPAD_RT GAMEACTION_SHIFTDOWN = XINPUT_GAMEPAD_LT GAMEACTION_RESET = XINPUT_GAMEPAD_BACK HUDACTION_PAUSEREQUEST = XINPUT_GAMEPAD_START HUDACTION_ENGAGE_EVENT = XINPUT_GAMEPAD_DPAD_UP HUDACTION_PAD_LEFT = XINPUT_GAMEPAD_DPAD_LEFT HUDACTION_PAD_DOWN = XINPUT_GAMEPAD_DPAD_DOWN HUDACTION_PAD_RIGHT = XINPUT_GAMEPAD_DPAD_RIGHT HUDACTION_SKIPNIS = XINPUT_GAMEPAD_A HUDACTION_NEXTSONG = XINPUT_GAMEPAD_RIGHT_THUMB CAMERAACTION_CHANGE = XINPUT_GAMEPAD_Y CAMERAACTION_LOOKBACK = XINPUT_GAMEPAD_X