Yea, its also with valve index same issue.
The problem is the thumbstick is actually providing x/y axis, like a regular joystick. But you cannot assign x/y axis for knob tuning. Thats not an issue of the particular controller, its just not well thought through controls assignment.
I would like to assign the thumbstick to be used for tuning knobs and the trim wheel. Its not yet possible. Thumbstick has X/Y axis and the knobs require buttons for tuning. Also the trimming wheel has a trimming axis, but it is supposed to be a slider-axis which is not recentering itself. Binding trim axis to Y of thumbstick doesn’t really makes sence as it will always center.