I am under the impression the documentation has been fixed.
That aside. R70 is a good place to be taking the audio from no issues there.
I am fairly confident the issue stems from the drive level on the v4's being lower then the agc expects. I think the simple solution is going to be add another amplifier stage before the audio in on the AGC but not having a board my self it is hard to test this.
Digger could I get the measurements of Vol-High with those same measurements?
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Tim Keller - KE2GKB