I installed the Saitek mod that can be purchased from Sergey Fedorchukov which converts the Saitek throttle quadrant into a 737 NGX throttle set. It does this by adding an additional "joystick" to the Saitek throttle quadrant. This "joystick" consists of a Speed Brake lever and 6 switches ( 2 for A/T disengage, 2 for TOGA, and 2 for thrust reversers). I installed the mod and Throttle 1 and 2 and the Flaps which are the 3 levers on the Saitek Throttle Quadrant were assigned correctly in FSUIPC. These are the normal levers on the throttle quadrant and are connected by the cable from the cable from the throttle quadrant to the Saitek Yoke. The "joystick" consisting of the Speed Brake lever and the six switches connects through a USB cable to a powered USB device. I was unable to assign the spolier access or any of the buttons through FSUIPC. Sergey recommended I download JoyID. When I ran JoyID the following was noted, ID#1 Saitek Pro Flight Yoke, ID#2 Saitek Pro Flight Rudder Peddles and ID#4 B737, which is the Speed Brake and 6 switch "joystick". He told me that sometime moving the ID to another number will allow FSUIPC to see the device. I changed the B737 to all 16 of the positions, with a restart of the computer after each position change, with no ability to assign the spoiler access or any of the 6 switches. Sergey asked me if I could assign the spoiler access and 6 switches from settings/control panel. I was able to do so. I am at a loss as what to do now. I will include the fsuipc.ini file here since it seems that it is always asked for.
Registered copy of FSUIPC. Latest version of P3D, latest version of PMDG 737 NGX
Thanks for anyone's effort.
FSUIPC4.ini
FSUIPC4.log