BTW, my digital cable is Nordost Silver Shadow.
I kinda doubt that’s helping your situation at all. Even if you don’t keep the AM I very highly recommend you try this AZ MC2 digital cable as its sound characteristics seem more inline with your personal preferences. If it’s not just turn around and sell it for little/no loss, but I seriously think it’s worth your while to try. And yes, I own one and it’s amazing. Read the reviews. My bet is you sell the Silver Shadow in a heartbeat and will make the AM sing in full voice.
https://www.audiogon.com/listings/lisaj916-acoustic-zen-mc2-digital-cable-rca-digital