You cannot use Extensor Action on the Elbow Plane. Maybe a Hitter can, I don't know, but I do know, positively without a doubt, that Extensor Action cannot be active/used if you swing on an elbow Plane.
This was a very good tip, Daryl. But I KNOW that you can do extencior action with shift down to elbow plane.
It requires a different rhythm. But I think I understand why you say so. Because since I tried the stock TGM address position I have been experiencing frequent problems with an open club face through impact. But when I have the pivot and arms working the way I want them to, I can do all the extencior action I can produce. I can even drive load without losing club face control.
Doing extencior action on an elbow plane is probably not compatible with a back stroke that starts with a right forearm pick-up.
Doing a back stroke that makes the slight arch happen automatically is part of the solution.