As the title says my PT22 is not feeding well.

I really like this little gun but I'm not nuts about the feeding problem. I bought this little pistol new and shot a couple mags through it no problem. Then it sat for awhile. A few weeks ago I got it back out, lubed it up and went out back to shoot it. It shot one mag clean and then would not feed well.

I have always used CCI Stingers or Mini Mags. I'm no gunsmith so I ask you, is there something I can do or should I just send it in to Taurus? They have pretty good service, I think. Thanks in advance for your input.