I just looked at the images form this weekend and found many photos taken with the 85/1.8 severely back focused. Running the tests showed that it had to be adjusted to +7(!) for clear images.It’s a wonder I got any focused images before, but using smaller apertures in studio masked the effect.
For me, the best and quickest way turned out to use live view at 10x magnification and then checking AF with mirror down, first at 0, +5, +10, +15, then narrowing down the results. The difference in sharpness has been drastic. I also re-checked my 200/2.8 and 300/4 and did not find any need for adjustments.