Power valve not opening

“But I could see gas in the PVCR's when I removed the PV and the chamber in the main body looked like it had been wet.”

So you’re saying you have gas on the vacuum side of the power valve? If that’s the case, my thoughts are bad power valve, I know you said it operates with lip test but does it hold under vacuum?, metering block to main carb body gasket leaking, cracked or warped metering block, power valve gasket damaged or power valve improperly torqued (loose). As I said that’s my thought process. Maybe not in that order but somehow you’re getting fuel where it doesn’t belong on the vacuum side of the power valve. That manifold vacuum reference is a straight shot to the base of the carb. I also can’t explain why it occurred after just sitting.