Is the mag release button/system adjustable?
I have one of these pistols that is giving me a problem. I find that the mag release can be pushed in too far, causing the mag to drag on the "cross pin" of the release. I didn't notice it at first, during range time. But when I started shooting it in competition, I began hitting the mag release with a little more gusto. That is when I noticed that the mags "stick" a little and had to be pulled out of the pistol. Of course when I wasn't under the pressure of competition, the mags fell right out, under the lighter finger pressure of the stress free shooting on the range.

Or should I call S&W, as it is brand new (within 8 months, anyway) and have them look at it? I was hoping to not have to send it in to them if it was a simple fix.