Hi Just received my P3A minutes ago and out of the box, spotted 1 cracked arm. A deep crack. So much for purchasing carbon sub-frame from UAV Bits to combat any stress cracks. I took photos of the packaging and it was not opened before which lead me to believe, it was overtightened out of the factory. As I'm from Australia and purchased from US, what do you guys think I should do? Do DJI send out replacement shells?