Had a problem with the magazine on my PF9. Sent it back to KelTec and it's been a great gun. Most likely the problem is the ammo and not the gun. I always have better luck with my reloads than with factory ammo.
I Never carry a gun that has not been fully tested at the range. You cant trust your life to an unknown commodity. Not only should is work well, but you should be proficient with it.