Combined axis for dual clutches on sim racing steering wheel

[MyronIanny]

Hello, I'm using Freejoy for making a sim racing steering wheel. For dual clutches I'm using combined axis function, so there are 2 paddles (hall sensors) and a potentiometer (10k) for setting the max range of the second paddle. The problem is that when I set the max range of the second paddle with the potentiometer (bite point) it doesn't use all the travel of the paddle ( like "demultiplied" (if I set pot/reference axis to 50% paddle should have his max travel but using 50% of the axis output)) but only less of the axis range. I tried functions for prescale using buttons instead of potentiometer but still the same problem. How could I do? Thank you very much in advance.