[golfbulldog]

How many "TGM shifters" truly have their tip/butt ends really pointing at a single plane line during the shift?

Unless it happens near instantaneously around club horizontal to the ground/parallel to plane line then a shift is almost always off plane until it re-establishes a pointing-at-the-plane-line position.

That is what I mean by drift - a gradual off plane movement which is needed to re-establish on plane shaft/sweetspot plane after a shift.