Is there anywhere we could read up on how Master Yamazaki taught the 5 points: Stance, Balance,Focus, Execution of technique, follow through--- maybe Jeff Hall has a better American presentation? Any info would be helpful.
You're on the right track with Jeff Hall. I've never met Master Yamazaki, but Soke Hall has worked with him extensively. Soke Hall is one of my own sensei and you won't go wrong reaching out to him for training. Check out: http://www.martialartofthegun.com/whatis.html