My P9 was one of the few trouble free models I owned. I liked it a lot and shot it a lot. Traded it for a similar sized Walther PPS. Nice gun but I should have kept the P9. Later bought a S9.
I've never really accepted a "break in" rational towards function failures. A gun should work reliably from round one. Almost all of the many guns I've owned have worked out of the box. Gun springs should be ready to function, no question.
Congrats on the new Kahr. I hope it becomes reliable soon.
Judging by today's left wing, looks like Senator Joe McCarthy was right after all.