Members Opinions and Comments on Today's Electronic Voltage Regulators
I found the article in MA. It's the April 2022 edition. The VR is referenced in the article titled Acid Test, about restoring a battery tray. As a subtopic, Ehrenberg goes into over-charging batteries causing the releasing of corrosive acid. He devoted a couple of pics to the adj VR, although he doesn't mention Transpo specifically. He did reference the eBay seller mcgworld_1; he's a Transpo dealer and the one that I bought mine from.
I'm glad I found the article because Ehrenberg believes 14.4V is too high, he set the VR to 13.9V. As previously mentioned I set the VR to 14.46V so I'm going go back it down some more.