I read this thread with great interest as I've struggled getting the club to "lay on the line" for years. Lynn and I have worked quite a bit on this, and during our school at Pine Tree last week, another contributor to being "under plane" in startup/backstroke came into view.
The golfer can have EA, minimal pivot (acquired motion) and still have trouble maintaining the clubshaft's alignment to the plane line; wrist conditions (Mechanical Checklist, Section 4/5, #16) also play a role. Remember the left wrist cock is a vertical motion. Go to impact fix - then cock the left wrist vertically. This gives you the wrist alignments at top (and at finish)
I found my left wrist arched as I moved from startup into backstroke. This caused the need for a compensating move at top. Life got much simpler lately when I corrected this error.
Moral to the story: Use 12-3 Mechanical checklist. The answers are there!
PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
ERROR: The request could not be satisfied
504 Gateway Timeout ERROR
The request could not be satisfied.
We can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.
If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.
Generated by cloudfront (CloudFront) HTTP3 Server
Request ID: Frtvlb6WorYNO019S8T7jgbOlDJkLm-QLH0aJgv2fqMUEYq1Tzw14Q==