That's the last time I'd have that shop touch my car.
My '19 Imp is the first car I've ever had with individual readout for tire pressure. I love it... but it's been a trip getting the tire pressures where I want them. It must have taken 6 or 7 attemps before I am mostly satisfied, and even at that there's some mystery left.
I bought a new digital gauge/filler which is vastly more accurate than the ones I've relied on all these many years, good accurate dial types, but limited to 1 psi resolution. With those my readouts were all over the place. The digital gauge, after several attempts at setting the presssures precisely showed that the TPMS units read .3 psi higher so after factoring that in I was able to give my OCD a rest. But then I learned about the effects driving made, and how the fronts gain more than the rears after driving, and how even different driving affects psis. One more thing to obsess about...

but I love having it anyway.
I still do my walkarounds regardless. Trust but verify.