Update: Mine still does that quiet clicking thing. It's just less prominent now. And still jittery on last digit, like I said.?
And I wanted to check the current draw of the PA with the 20V supply. I found that R136 doesn't do much at 20V. When I experimented with R136 at 12V it made all the difference in the world. But the no audio current draw was 90mA and long aahhh current draw was as much as 1.3 Amps. Just something about that note in my voice makes it peak high, and normal talking is around 750mA. So, current draw is about the same, going from 12V to near max of 24V. No need to recalibrate after doing it at 12V.
