Serge, I'm glad to hear that I wasn't hearing things with the A23SUT, it really is a huge improvement and makes the 103R come alive
it's not clear from your post, but are you also running the EMT cart through the SUT?
Very nice setup Barr, there was a similar plinth/table/arm combo on a'gon earlier this year but unfortunately I missed it by a few hours.. Is that also the Shindo platter/bearing/weight combo?