There is some Kel-Tec love being spread around some other threads.

As a P3AT owner for two months, I have shot CCI, Winchester, Speer, Cor-Bon, Magtech, with no issues. Up around 250 rounds at this point, did consider the LCP very hard.
As some have said, 1 (gun) is not enough, I don't work for Kel-Tec, but it seems between the SR9, and the LCP, the margin of whether one gets a "good one" or not has not gotten consistent enough. Surprising from Ruger, as I own Ruger's as well. Maybe trade it for a P3AT. Even the P3 has a second generation, worked out the bugs type of thing,... so maybe when the LCP's get there it will be totally awesome.
Hope they get it back to you soon, and I sincerely hope you can run ammo through it and have no more issues.
No gun should have a "list" of ammo NOT to use. Maybe 1 or 2 brands are more finicky than others (Wolf for me), but not a "List".
Good Luck and Take Care
Tom W