[annikan skywalker]

I would say when the left hand is turned to the plane it is parallel . . . but also assuming that you have the same amount of #3 at fix as actual impact it also determines the Plane Angle . . . Lower hands = More #3 and thus more towards the Elbow or Hands Plane . . . Higher hands with the less #3 result in a Turned Shoulder Plane angle.

Bucket..isn't that what I stated previously....I smell what your steppin in!!! #3 it's angle and range of motion varies depending on the plane angle ...As stated above and previously... Inclined Plane...verify sweetspot plane and/or shaft plane...remember the shaft may move from its own plane and rotate onto the plane of the sweetspot...So when you are referring to Inclined Plane? Sweetspot or Shaft? Usually when Turned to the Inclined plane they are in the same plane!!!