Today i was in the LGS, eyeing some new pistols. i held a new M&P in .40 full size and fell in love with the feel. i like the trigger, slide looks/feels nice, and it was only 450 OTD. having been interested in these guns for some time, i bought it. i immediately cleaned it, lubed it, and took it out. i was shooting WWB FMJ. i fired 90 rds, and i love the way it functioned, fired, and felt. except one semi-major problem. The mag released 4 different times under recoil. it happened in the first 4-5 mags i put through it, but each time it dropped and failed to chamber a new round, leaving me **** outta luck in a SD situation. i cannot trust this gun if i do not resolve this issue. ive heard this was a problem with the older models, but this one was test fired 2-09-12 so im assuming its newer. the sn is DXF4728. ive been looking into the frame at the mag catch, and i can see its already slightly worn looking. and that spring design for the catch looks like a ****ty design. has anyone had issues like mine? what should i do? call smith? it sucks having issues straight outta the box, i almost bought a G22 g4 instead, i hope i dont regret the S&W, because i really do like the gun.