The low pressure side of the nitrogen regulators is now showing about 30psi instead of the 50-60psi which it has been over the past several days.
Of the two tanks, one is showing a high pressure of 2100 psi. The other was showing roughly 500, until I tapped the gauge, at which point it dropped to the lowest setting on the gauge.
I am not certain that I can identify the flowmeter ball in the Region 2 bubbler camera screen. There is something in the image at about where the ball ought to be, but I'm not sure if it is the ball or it is a distortion of the image.