And another test this evening...
With my f/4.7 XT10 and adjustable top Paracorr-I set at the #2 position (second line from full down), stars were sharp right across the FOV. Just the slight lateral color near the far off-axis, which is typical for all wide fields (I don't think I have found a wide field yet that doesn't have it). So in the 14mm and 12.5mm, the lateral color on a star point started to show at about the 20% from field stop, and for the rest of the shorter focal lengths at about 10% from the field stop. And of course only on brighter stars, and not obtrusive. So all-in-all really beautiful FOV. M13 was spectacular in all the focal lengths and all the stars in the glob stayed just as visible across the core whether it was dead center in the FOV or when M13 was positioned so it was bisected by the field stop. Nice little star points everywhere.

And btw, field stop sharp on all of them (14, 12.5, 9, 6.5, 4.5).