I don't use expo since I got a 14MZ. I use the line function or whatever it is called and make my own "curve". It includes plus and minus .5% deadband so the stick always comes back to the exact same neutral and also minimizes the chance of getting elevator into aileron or vice versa. From .5 to 2% of stick travel AFR goes from zero to .5%. From 2 to 12.5% of stick travel AFR goes from .5 to 2% which is very soft but linear. I then approximate an expo curve from there out to 100% of stick travel. So far I haven't needed any rate switches which was the objective. Sooner or later a rate switch would be in the wrong position so I eliminated the potential problem.

Jim O