You are mixing cause and affect again. Don't cause your left leg to do anything. Don't make it do this or do that. Don't make it stay in any one place, nor don't make it go to another place.

The idea I am trying to help you in, is that if you are thinking about your left leg at all, then you are probably manipulating it to cause another part of the swing to be out of your natural position.

Create all the big shoulder turn using your core, not your base. A base it used to balance. Your core is used to generate the rotation and power.

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I'm a golfaholic, no question about that. Counseling wouldn't help me. They'd have to put me in prison, and then I'd talk the warden into building a hole or two and teach him how to play. ~Lee Trevino