Unfortunately this didn’t fix it for me. I have spoilers on a slider, verified that it goes to 100 % but no wheel braking. I also added a button to extend spoilers fully and unmapped the slider in case it interferes somehow. And of course I tried mouse cursor to drag the handle to all possible positions and right clicking it, also at 100 %.
So, I wonder if I still missed something.
Anyway it might be a good idea to add a new mapping for glider wheel brake so everyone can use their most favourite inputs for it.