So, I bought the GP20 (advanced). Apparently, instead of a dynamic brake lever there is a selector to be set from 'B' to Off/1/2/3/4.
What I would like is for TS helper to automaticly use the lever I normally use for dynamicbrake be used for that selector lever. It's a spring-lever by default, and I managed to get it detected and 'working' up to the point where my axis moves the selector indicator to the desired value, but naturally because it's a spring it won't stick and will return to 'off'
Edit: Well, now I have it working on some sort of switch on my Warthog that is seen as one of the axes. It always bounces back to the middle, so I can at least go +1 and -1 on the selector.