@Rayray
Yes,
If using the "Channel Settings"
You will see that when you move the sticks around, they are:
1) Not at ZERO when left untouched.
2) When moved to full throw, one direction will not read 0% (zero) or 100% depending on direction of movement. Some of the sticks center is 50% when centered, others zero is centered and they go to +100% and -100%
Mine had a slight left drift, (Aileron J4) read -3% with stick centered. doing the calibrations brought it back to 0%.
You are NOT adjusting any of the curves, just telling the ST-16 where center and full throw are.