So I've got quite a few flights on our new Inspire and she's been rock solid. I'm getting an X5 kit together which hopefully will be shipped this week, so I wanted to do a once-over on everything to make sure the bird is in good condition before lifting our fancy new $3,000 camera. Each of the motors has a very small, but noticeable amount of vertical play. I would say less than 1 mm, but it still goes up and down a noticeable amount. Is this normal or should they be tightened? I'm still a bit nervous about my QR props (not the newest revision) as well... They should be fine, right?