Rental compressor plus one california compressor still could only provide a continuous pressure of 60psi, but I also waited for the pressure to get to 120psi to turn it on and tried when the pressure at the gauge was 80psi, but same thing. The only alarm I get when the pressure drop very low (under 20psi) is related to the collet switch. So you guys don't think there is something wrong with the motor or drive? Is the pressure gauge in the attached picture supposed to show any pressure? Mine stay at 0 psi no matter what.

Thanks