Cheat Engine

[supercharger]

i am trying to modify some codes in the game IL2 , mainly the keyboard response.
a certain memory cell contains joystick position, bf800000h ~ 3f800000h. when the game is controled by keyboard instead of joystick, there are 3 instrutions writing to the memory cell:
mov [esi+xx],3f800000 or
mov [esi+xx],00000000 or
mov [esi+xx],bf800000

strangely, these codes are not in the main EXE - IL2FB.EXE , and they are not loaded until the game(into flight) starts.

i can write an add-on app to modify these codes in runtime, but i want to hard code them into IL2 files (so no need for add-on). the problem is, i have looked through all files in the game folder, but still can't find the file which contains these codes ( mov [esi+xx],3f800000 etc )
is there anyone knowing about this game and know the file containing these codes?