Hi bill, I know you have said your system leans towards the bright side, we have similar systems including thiel 3.6, one difference is my preamp is a CJ premier 14 and I can't recall yours. Our cables are almost identical, I have MIT reference IC's and until recently an Oracle V3. In my system the V3 pushed my system a little too bright or in your face. I went back to 750+S3 and the sound is more relaxed, especially on the top end - I think you have a V4. Just an observation in my system - might have nothing to do with yours.
Good Luck, Jerry
Good Luck, Jerry