Thats a great skin. I see one of the panels on the top front of the right wing near the tip looks like its lighter or an unpainted patch.
Good spot, probably a bullet hole patch. I can add that to the skin.
I've not seen any other photos of 343's A6M5s with white wing tips and their later N1K-2s did not have them either. IIRC some Kamikaze units' aircraft used the white wingtip marking as well but I haven't got any photos to confirm that.