So took it all apart, valve seems fine no dings where it seats against cup seal, but cup seal is hard as a rock with a ring worn into where it seats against valve, o rings were fine, was really dirty in the lower of the body but all cleaned out and re lubed and still leaks.....
I highly doubt your issue is the cup seal, those things are meant to be hard, it's a high pressure gun. The valve o-ring is a more likely culprit, followed by some oil in the vertical ASA and a few shots.
The pump guide likely needs an oring and/or tightening.
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