Here's a snippet from my log:
305902 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 13541 (0x000034e5) AXIS_RUDDER_SET
305902 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
305933 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 11645 (0x00002d7d) AXIS_RUDDER_SET
305965 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 10020 (0x00002724) AXIS_RUDDER_SET
305965 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
305996 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 6634 (0x000019ea) AXIS_RUDDER_SET
306027 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 4468 (0x00001174) AXIS_RUDDER_SET
306027 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306074 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 406 (0x00000196) AXIS_RUDDER_SET
306074 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306105 *** AXIS: Cntrl= 65764 (0x000100e4), Param= 0 (0x00000000) AXIS_RUDDER_SET
306136 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306199 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306230 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306308 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306370 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306401 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306464 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306542 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
306573 *** AXIS: Cntrl= 65696 (0x000100a0), Param= 0 (0x00000000) RUDDER_SET
How can I isolate what's sending Cntrl=65696 and how to stop it? I have no axes bound in FSX itself, and FSUIPC doesn't detect anything being pressed/moved when I go into the button/key/axes setup screens.