[Yoda]

Especially as the hands are arriving at impact, should the pressure one feels at PP3 feel more like a reaction of the shaft on to the right index finger (a resisting force) from pressures elsewhere, including PP1? Thanks.

The Clubhead Lag constitutes the Indirect Drive of the Stroke (7-11) and is almost always assigned to the #3 Pressure Point (10-11-0-3). During the Start Down, the #3 Pressure Point accepts the Load -- Clubhead Lag Pressure Point Pressure -- put on it (by the Pivot in Full Strokes and by the Right Arm or Left in Short Strokes). It then unwaveringly sustains that Load through Impact and well into the Finish.

Unlike the Power Accumulators, the Clubhead Lag has no Release Point.