You should keep ANY handgun your going to stake your life on CLEAN, and well lubed. Kel-tecs seem to NEED a high-quality gun grease on the slide rails, and hammer/slide interface (light amount for both) to run better. Everything else needs but a drop of good quality oil, CorrosionX for guns is my personal favorite, keeps rust away too. Ive read just as much bad about the ruger lcp, and honestly, ruger has a liberal attitude on magazine capacity, where kel-tec does not. Kel-tec also stands behind their products, good luck finding that elsewhere.
clean it, lube it using proper lubes, and then try shooting high-quality ammo out of it. Maybe even polish the feedramp, something I think kel-tec should start doing, it would take but a few short minutes with an air die grinder, polishing tip and stick of jewelers rouge.
All that said, Ill be my life on my P-11. though id rather carry my 1911, that gun is just too heavy and bulky to cc.