Why do you feel you have to change it?
My club head always starts back under the plane, but by different amounts depending on the time of day. This results in an inconsistent position at the top and starting down. My downswing plane always shallows out an inconsistent amount also.
The ball starts right of where I'm aiming 99.9% of the time, from pitch to drive.
So my regular shot is a push cut, push or push draw with the occasional snap hook thrown in.
I want the ball to start where I'm aiming.