So I've read a few posts about phantoms not tracking straight and veering left heading away and right coming back. I had a hunch that I could check if I was inadvertently making the left input flying away from me and right input coming back. So I plugged into the Naza assistant and watched my control stick feed back. It turns out I do indeed make a slight left input pushing the right stick up and a right input the other way. Just something to look out for May be a right hander problem and I'd be interested to hear from the lefties out there.