I had the same experience with the same lens! Of course the 1.4 primes especially the 85 experience a red/green shift either side of the focus point. In fact, you can use this to your advantage in calibrating the lens in that the correct AFMA (IMHO) is the one equally far from each shift. I found that FoCal "likes" the red shift of a positive AFMA number and tended to choose a result that was therefore in error when comparing actual photos.
If you apply the human brain to the results, I am finding FoCal to be a great tool for homing in on the best possible AFMA.
(Also glad to find my D800 did not suffer issues with the left side!)
FYI, I also found the original pdf printed on letter size paper to be too small and did targets on 13x19 that worked better allowing more distance between target and camera. Also, setting up at LESS than the recommended distances in my experience definitely resulted in bad outcomes.