My first two Conries were supposed to have been ball lock, guy who sold em to me either didn't realize they were pins or didn't think I would notice? Either scenario is hard to believe, but in actuality it worked out for me. I got a great price on em, probably because they were pins, and, being very near blind, I don't risk confusing the posts.
They are fatter and shorter and I did replace the lids for those with a manual vent, but now I just use a little plastic adapter thingy.
I do need a few more, anyone have a preffered source?