Are you referring to the orientation of the ball within the jig? If so, I try to position the ball such that the centerline as marked on the ball is parallel to a line extending from the base of the press through the center of the jig.
Hope this helps.
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Better to be a big fish in a small pond than not to be a big fish at all.
Horrid in Doubles, torrid in Singles...
...that's The Curse of Dusty.