[Mike O]

Bob,
I'm not saying this is necessarily the "proper" way to swing.
But

A) it touches on the issues of how these particular joint motions create patterns through the other joints.

B) secondly, the control and flow should be from the contact point back through the body- that ties in with the "intention", anotherwords if kicking a soccer ball then it would be the motion of the foot / lower leg that would create the other joint motions.

C)So I wanted to have you make that "exagerated" movement to see the principles at work. So in that context, at halfway back you need to twist your forearms to the opposite extreme by the time you get to the top. From there as you think of taking the hands down plane- they have only one way to move- untwist- until halfway down the again move the other way to impact- from the top- if you just make the motion or sense the force- I think it should pretty much happen- certainly on the downswing your letting that happen- not trying to make it happen- you've already set it up.

Again, with your hands out in front of you- palms facing- wrists vertical to the ground. Your saying that you turn the left one palm down and the right palm up- and that's your motion to the top of the forearms. Then on the downswing- they move back to vertical from release to impact. Essentially, your starting at vertical, turning, then returning to vertical. Notice the difference in potential power when you do what I'm suggesting you try to see the patterns of joint motions.

Start at vertical, turn (1/2 way back- left forearm pronated, and right forearm supinated), then from halfway back- to the top your completely rotating your left forearm to supination and the right forearm to pronation, much different than you're currently doing. Now, here's the big potential difference, in this "exagerated" movement besides created the proper body movements as a result of the left forearm pronating and the right forearm supinating on the first half of the downswing, you've got this whole extra power source added to the handspeed- that left forearm pronation and right forearm supination is adding tremendous speed to the clubhead in addition to your handspeed.

We are in the LAB- so in this context I'm just throwing some ideas out. So, back to your question what are you missing? Yes, step two and three. But remember I'm saying at this stage and this context play around with the concept - And see if you can that this extreme forearm rotations A) create some of the corresponding body movements that I described above and B) did you acquire more distance as a result of the added clubhead speed. Then report back (anyone) and see what kind of feedback you have.