Originally Posted by TheCrowsNest
I woke up this morning and my pressure has dropped from 800psi to ~500psi. Frustrated.
If I recall, the high-pressure gauge on CO2 regulators is almost useless. The CO2 is in liquid form in there, except for some that has evaporated and is a gas at the top of the tank. That gas at the top of the tank will always be the same pressure until you are ALMOST empty.
So, that gauge is pretty much a "tank is empty" or "tank is not empty" thing. It really doesn't tell you how much CO2 is left in there.
Did you stick your tank into a fridge last night? If so, maybe that's the reason for the gauge reading a lower value now?
As for having liquid on the gas connector post.... did you slosh the keg around at all after filling it up?