Just from memory, i think there are at least two or three, maybe more different types of followers on those mags.
One thing that does occur to me is as you empty the mag there I think would be more spring pressure on that last round. Just for giggles load one round in the mag and have an open slide and work it slowly to see how it is going forward. All under safe conditions of course. I wonder if the mags are putting to much angle on the round?
