On Reverb G2 controllers the "Thumbstick X" and "Thumbstick Y" are not operating anything

[stekusteku]

I suggest checking this:

[Solved] ! How to precisely input values using VR controllers

The issue is now already known i guess. Using of tiny knobs like HDG, CDI, Altimeter as well as the trimming wheel in the C152 by turning the VR controller is pretty much impossible with any degree of precision. I have now found a nice solution for that. Just assign “Cockpit Interaction Increase” to right thumbsticks Y axis. Reverse off. “Cockpit Interaction Decrease” to right thumbsticks Y axis. Reverse On. Then you can use thumbstick up/down to rotate the knob accurately. Its awesome. For…

and the workaround specified here to allow assiging functions to thumbsticks:

On Reverb G2 controllers the "Thumbstick X" and "Thumbstick Y" actions are not assignable

Workaround: To assign anything to thumbsticks in Reverb G2 choose the “Thumbstick X” or “Thumbstick Y” from the list when assigning. Just moving them will no allow selecting them for assignments, as described in the bug report above. Probably because the thumbsticks are axes not buttons.