Diseasel 300, I have both digital and stick, but both are very old. Just wish they still made the inline gage on the air hose that was at gas stations back in the 60's.I have a 60gal air compressor and that would maybe make it easier to get the correct psi. But the problem seemed to correct itself by my deflating the tires way down to around 19-20 psi, let them set for 1 day, and then inflating them to stated on the fuel filler door as suggested by ILUVMLS.