Do you have the load cell too or just the 2 pedals?
The 2 pedal kit doesn't have manual calibration so you have to live with it. I found it quite annoying at first but noticed that my inputs were actually more controlled because I'm apparently lacking skills when it comes to giving the input I want in my head.
The dead zones kinda countered that issue between my feet and head.
I upgrade the loadcell add on a few weeks ago and now I have the manual calibration available. Tuned the dead zones a little.
So 2 pedals: you can't do anything about it
3 pedala: deactivate auto-calibration