Hrm... So you think it's just not showing up in the list yet? I'm pretty sure I've only flown the F4u1 once this tour, and only landed 4 kills (I remember because it was recent). I got about 6 in the 1A, though, and it shows that I have 10 kills under the "1".
Oh well, I won't complain about phantom kills. I'm sure it'll get sorted out in time.