You're on the right track, KnightT. However, I suggest you modify your drawing to include a little #3 Accumulator (Left Arm and Clubshaft Angle) in the Left Arm Wedge. Then, let that Angle illustrate the 'inverted' Wedge shape.
There still is a Left Arm Flying Wedge with Zero #3, but the 'Wedge' shape (the #3 Angle and Wristcock) itself has disappeared! Nevertheless, a basic illustration would not omit the identifying relationship.
Mmmm, I think I don't understand the difference between Accumulator #2 & #3!
The book is not helping much because picture 6-B-3-0#3 (this one is not clear!) is visually the same as 6-B-2-0#2.
As far as I understand, #2 is the left wrist coking & uncocking while #3 is the angle between the shaft & left forearm......so to me it relates to the same thing !?
So, how is working the #3, how do you load it?
What does HK means in 6-B-3-A when he says "...unless it is "Zeroed Out" there must always be a definite Accumulator #3 "Overtaking" Action?