FSX tuning gamepad end zone

To learn how to fly RadioControlled helicopters I wanted to try playing FSX with an X-Box gamepad (I normally use a yoke).
(I choose FSX and not dedicated RC rims because I think the Dodosim is the closest to real dynamics with complicated and deadly things such as vortex ring states and because I already own it)

The layout of the RC radios is usually this one:

My problem is that, by the nature of the X-Box controller, giving full rudder and full throttle at the same time while using the layout that RC radios use is impossible:

Thus even hovering becomes very difficult.

All this could be easily solved by cutting the input values, for example
|raw input from controller|result sent to flight sim|
|:–:|:—:|
|0|0|
|50|75|
|75|100|

Is it possible to achieve this result in an easily revertable way so I don’t have to re-configure the controller for other games?