[Daryl]

How do I know if the Rt shoulder is on the right plane in the downswing?

Excellent Question........................

This is what Happens when your Right Shoulder, Clubshaft and Hands are on the same plane at Start down.

Without pulling the club with your arms, i.e. the club being pulled down by the Hip-Slide-Pivot, your Right Elbow will Forcibly move Down Plane. Your Right Elbow will feel like its DRIVEN down-Plane. When you first accomplish this, your Right Elbow may Slam into your Ribcage. Once you do that a few times, and adjust for Plane Line Tracing, your Elbow will be Driven to its Release Location with-out effort.