Here's my thought- maybe the 400 speed films are made by someone else, as my 100 and 200 rolls clearly said made in italy, finished in america.
I'd still reccomend sending it to a lab that does ecnII stills just to be safe
https://bluemooncamera.com/
https://oldschoolphotolab.com/
https://www.boutiquefilmlab.com/
https://www.thecamerashop.com/imagecenter/seattle.html
