Hello,
this is the noise of the potentiometer.
your delta is set to 256 so 1 step is 256, 128<256 so it is 0 (at least this is how I understood this), you can modify the delta if you want, but it will not change the noise of potentiometer.
assignment is the first step, don’t focus on the numbers you see here.
next step is to define the action and what you want to do, send to FSUIPC calibration or directly to FS. when you send to calibration, after that you can see in and out are different, once the dead zone define small variation on input when centre will show you 0 on output.
don’t forget that the total range should be around 32768, so 128 is only 0.4% and by choosing delta of 256 you set the precision to 0.8%
Regards.