I'm not sure I'm comfortable with what some factory engineer have said about rocker geo.
I have it on very good authority that Chrysler believes and says that the stock RB pallet location and curvature completely eliminates all scrubbing motion, and the pallet rolls continuously back and forth on the stem tip.

Except that this is physically impossible.

I agree that 1/3 @ 90 degrees has worked well, but that then just poses the next question: (A) is that how it was designed, or (B) only how it's adjusted, and, if B what was the original pivot position?