[12 piece bucket]

I sence alot of fog

I'll restate the question...

What is the relationship between the plane of accumulator no.3 (which can be the plane of the left wristcock motion also - that was a good identification but doesn't show the relation between the two) when it is turned to the plane (hence fully loaded) and the inclined plane. What is the relationship between these two planes....

My question is not vague....

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.