Just unboxed my new P3A yesterday and have yet to fly. Am now noticing that the vertical axis of each of the 4 motors is on a slight tilt from being 90 deg. to the horizontal plane. Is this normal? Also noted that the 4 anchor screws for each of the 4 motors has 2 that appear to be inserted further into the shell than the other 2, is this normal? And of course wondering if indeed this is normal then why? Also I seem to have the older motors.