I have a new P-3AT and have fired about 50 rounds through it. I've cleaned it and oiled it. I have not fired it since cleaning it. What happens now is most of the time after I chamber a round, I go to pull the slide back and it won't slide. I try to rack in back and forth and all of a sudden it will go back. I called Kel-Tec and was told to put the front of the slide on a piece of wood and push hard. Well I did and it worked but I am still having that same problem. Is it something I can fix myself or do I need to send it back to Kel-Tec? I'd appreciate any advice.