VKB-SIM

I use the T rudder pedals only from vbk sim.
I am also using a thrustmaster Hotas.
When I do windows joystick calibration I see x and y axis and z axis in the t-rudder game controller properties.

I'm asking If is possible to use those unused axises..

I like to know if it is possible to utilize the X and Y axis of the the T-Rudder Mk.IV pedals porduct?
is it possible to attach potentiometers some where in the circuit board to allow control of the X and Y axis?

thank you