Yes ARoamer, probably Chinese "lack of" quality combined with COVID... it's a 2021. Specifically, the thingy under that large blue connector that is supposed to depress something where it threads into the tank wasn't working. The guy could insert his drill bit at the opening of the tank, depress it, and hear gas but the connection wasn't seating. He also told me the hose was too loose where it joined at the metal piece directly behind the blue knob and that it is rare that a hose/pigtail would be defective. I wasn't given any detail on the regulator itself, just that he concluded it was bad and gave me a new one along with the hose.
BTW, there was a typo... upon closer inspection of my pic, it's Chen F"o"ng (not Fung) - sorry.
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