Thank you! Interestingly today, I tried putting in a medium arch support insert in my right side and the pain was reduced markedly. Can you tell me more about your rabbit hole? I have a very wide foot (6E) and a very high arch so I’m about to order a higher arch insert to see if that helps more. Given I had a pain reduction from loosening the BOA on the shoe, and further reduction putting this insert in (ok, I also dropped the seat 1cm), I am hoping that focusing more on the foot will get me most of the way there as a focus for now.
I did try pedaling for awhile without the bike shoes and it was somewhat improved from the original but sort of reached a point where nothing was improving further. Then going back to the bike shoes was unchanged. I might try that again. Thanks @Rosscopeco.