My two cents worth: yes, I was always totally amazed with the tremendous knowledge that Mac had about BIAB (and actually so much else)!! It was so informative to read his threads/contributions and I have missed him tremendously....I was so thrilled to see you make this effort to reconnect with him, John, and I just hope, along with all of us that knew him, virtually at least, that you hear back from him and let us know if you do.
Thanks for your attempt,
Cecil