Den,
You and I have spent many hours listening to Eastern Electric equipment in the past, and we both have moved on. I almost purchased a Raysonic, but settled on a solid state Soundquest SQ 12 "Woody" which was compared to the Raysonic in several past published reviews. My Woody came with four of same isolation devices that you are sharing. While I did note some sonic improvement on my my baltic birch shelves, I placed my Woody on springs with basswood footer blocks, and a veil was lifted in clarity and the bass also improved whne compared to the sandwiched devices. The Woody sounds much closer to my analogue system than any cd player that I have used in the past. While it may not resolve as others have pointed out in past reviews when compared to your Raysonic, a few tweaks including a custom power cord have made the Woody a keeper for me. Very musical yet detailed and non fatiguing. Since my listening has changed to almost 80% lps, I am not using the CD player as much, anyway.
I suspect the sandwiched devices you are using may work much better on glass than wood.