One of my original 12-round P365XL magazines occasionally (~10%) will not load to capacity. The second round in doesn't "stagger" as it goes down, instead sitting directly atop the round touching the follower. This makes it impossible to load a 12th round. Not a critical issue as I can see through the catch hole if the round are staggering properly and this gun has been reliable otherwise. I know the solution is "throw it out and forget it", but I have several more USA-stamped magazines and I'm curious if this is a known Check-Mate issue.