Thanks for all these, Mike. I really appreciate your efforts -- these things always take much longer than people may realize -- and I know our members do, too.
I can answer the first question, 12 piece. The reference was the Mechanical Checklist For All Strokes (12-3-0). Specifically, we were discussing Section 6 -- The Top.
The second question I leave to Mike. Remember, I'm the original Gregorian Chant guy!