I have a 2 yr old Glock 19, probably 3rd gen (will post part of serial number if necessary). Anyway, the mags don't really lock in tight with a sharp click....and they stick out just a bit. Sometimes I'll push them in, think they're seated, then they'll start to fall out--then I push them in harder and after some pressure, I'll feel/hear a definite but slight click. I seem to recall reading about this mushy mag-catch business, but can't find it via a search. I was wondering if it's the mag-catch or the mags (all factory glock mags)...and what I can do about it. Thanks.