I actually work for nissan, and if they have had it at nissan head office and have had one of there engineerers inspect this and it gets knocked back, theres obviously a reason why. We have had about 2/3 new 370z wheels crack around the spokes, and these always get replaced under warranty (as its a pretty common issue). I really dont think too many people have cracked r35 wheels at all. I can raise the issue for you if you like with nissans technicle forum, and maybe even ask the engineers themselves. But believe me, if they knocked it back, they have pure cut evidence this is not a manufacturing defect!