It shouldn't make any difference, but is this an original R12 system or a R134 conversion (or something else)? Just curious what the EU is doing regarding greenhouse effects. Just an anecdotal comment, but last year when I replaced my compressor and several a/c components, I checked the static pressure of over 80psi prior to discharge and refrigerant recovery. That sounded like a good amount to me but when drained and measured there was only six tenths of a pound in the system, or about 2 pounds low. Even if they exaggerated, the system was substantially low and yet the compressor would engage??