Only recently I notice that the mags I have that have only chrome bottom plates (not the plastic, grey ones with the Ruger emblem) "hang up" at the last point as I push them into the bottom of the grip. If I jiggle them slightly, I can get them in. Something seems to be hanging them up and I cannot quite makeout a difference from the plastic bottom ones, which go in smoothly. Anyone else had such a problem? I assume the chrome bottom ones are "originals".