MinnFlyer's chart is pretty clear but one more thing would complete it for me. What is the percentage for the expo curve on it ?

I've been flying my Parkflyers Edge 540T with the surfaces set to minimum throws (inside holes - servos / outside holes - control horns) using the supplied TX. When I tried the 6EXA TX with it I was flying a bucking bronco !! Admittedly, I hadn't moved to the inside servo holes but I suspect it was partially because the sticks on the 6EXA are way smoother / have softer springs. I'd like to use this TX rather than the Parkflyers one and it seems that expo could be what I need to keep the model, as a relatively inexperience pilot, flyable.

If this is so, what would be good choices for the expo settings, for safe sports flying ?

Thanks