Appreciate your feedback. The idler wheel “upgrade” is on hold until I can get one from Artisan Fidelity. For now, I’m quite happy with the stock idler wheel — it still has plenty of life left. The Artisan Fidelity bearing and hybrid platter were a major step in the right direction.
I hear you on isolation and the external power supply. Among the options, I’m considering the LDA Quartz power supply from the UK. As for isolation, the Woodsong plinth weighs over 85 lbs and supplied with IsoAcoustics feet. I’ll need to hear how this combination performs before exploring solutions from SRA or something similar.
Almost to the finish line before I sit back and enjoy my 301.

