i agree with you on the flexibility issues the right knee staying flexed severely limits the turn of those that are less flexible. alowing that right leg to strighten allows you to turn your hips more wich in turn increases your shoulder turn and gives you more time on the downswing to get that right elbow back in front of the hip. think of sam snead allowed his right leg to straighten even though he was flexible had tons of hip turn and had tons of time on the downswing to get everything lined up.

Maximum Hip Slant but maximum Hip Turn?.
"The slant of the Hips affects the degree of the Hip Turn."
"The less bend the more the Pivot and Hip Slide will be restricted in both directions and the more upright the Plane tends to be."
The second sentence is in regard to the fix bend but if I turn back using Right Anchor and then straighten my right leg, the Hip goes up and LESS around. Am I missing something or do I have to study harder?.
Thankyou for all your help.