[HungryBear]

................
.............4. The Left Hand Rolls, the Bent Right Wrist does not. ...........
.

Daryl, You bolded #4 - I assume for emphasis?
Let's see if I am following your thinking.
The left hand remains perpendicular to it associated hinge plane therefore it will roll on the swing plane for horizontal hinging, remain perpendicular to the plane for angled hinge etc. ? The right wrist does not roll but pp#3, which is only monitoring for a swing with horizontal hinging will have the feel of continuing to rotate to the rear of the shaft all the way down plane and will arive at the rear at low point.
Does this sound like the same page U are on?

For the Hit-nothing rolls and pp#3 is stationary?

HB