On my 3 Kahrs (P380, CW9, CM9) I did the suggested clean/lube, cycled them manually 200 times then let them set overnight w/the slide locked back. Disassembled the mags and cleaned them as well (some nasty sticky stuff in some of them).
All have been 100% to date w/all mags including the +1 extended mags.
Tomac
