One of my motor arms/motors is making a slight rattle if you rev the motors with no props but sounds fine on idle. My phantom was repaired and one of the motors replaced, could a wire be rattling inside? All the motors move freely and feel normal. I really don't want to send my phantom 3 pro back for another repair, it still has never flown. It seems to be coming from one motor/arm area. I am charging batteries, I will post a video in a bit. Edit - here is the video, the noise happens right before I let off the throttle, kinda sounds like static.