Conduct the chase with a professional. I made the complete run with someone smarter than me, Tom at Big Ear Stereo in Tempe. He gave great insight into all of the Puritan products and the why and how of each one. I even grounded all of my components to include my ATC towers (active).
Yeah, it's a rabbit hole, but there is a very nice bright carrot at the end. Each piece added, or in this case subtracted, for improvement of the system.
He even screamed at me, correctly so, about my Netgear meta data transfer. Anything to clear frequency nasties from the chain. I got rid of it.