Being in NY, I have several pre-ban, NMFL magazines that I use in my G26. One of the G19 magazines does not lock in the when pushed into the magwell. I can just pull it out without having to use the magazine release. This is the only one I have that does this. Can anyone tell me what the problem is and how I can fix it. Also, will it work even though it does not lock in. I am reluctant to try it until I get more expert advice. Thanks.