No, Jim I must confess that I've not been working on that one too much through the European Winter. I'll start hitting balls soon and hopefully in Florida at the end of this month.
I guess what I'm thinking about is more maintaining the "drag" position well through and over the ball which goes back to Lea's point about the release which she spotted creeping into my swing. I'll have some more photos taken of my swing so they can be posted on the Forum and hopefully be of assistance to contributors. I'll revisit the straight left thumb back and through point I made.
Mindy would only conceive a movement if he could design a machine to carry out the function. In his workshop he made intricate gearing structures which proved to be ahead of their time. The "classic swing" can be made into an "Iron Byron" but I'm sure there would only be one element driving the club and not the two arms of the typical golfer.
As soon as one puts both hands on the club, there is conflict as they are coming out of two different shoulder sockets. So that's why I emphasise the simple task of the left thumb going straight back and straight over the ball driven by the powerful legs.