After what has been discussed, I think the keys to this 'top of the shaft loading feel' is:
Drag Loading
Standard Wrist Action on Downstroke
The reason I didn't include Startup Swivel (or Standard Wrist Action on Backstroke) and End Assembly Point is because they are not mandatory for this quarter turn feel in loading pressure, even though they are very compatible.
You are making remarkable progress, Leo. Three thumbs up!