While flying today had a prop warning come up. I forget now exactly what it said. But I'm guessing maybe a little bit of wear on the plastic fittings is causing a bit of vibration in the motors. Landed and changed battery and did not have the warning on 2nd flight. Has anyone had this yet and should I go ahead and change props now? Still on my original set after 2 months plus. Prob flown 120 flights maybe.