I don't know if it's just extra hot this summer, but I was trying to check my A/C pressures with my gauge set. But the low side connector doesn't fit. The other A/C line makes it a pain to connect to, but it definitely doesn't fit. I have a 94, so it's a R134a system. I've used the gauges on other vehicles so I don't think there's anything wrong with it. I saw some posts on google about early R134a systems still using R12 fittings. Is that true for the Z as well?