so while landing my phantom in wind i tried to descend too fast and ended up tipping my phantom over after that i took it up in the sky again and noticed a strange whistle coming from a motor it would come and go i also noticed excess vibration which was also noticeable in the video i shot later when examining the props and motors i noticed a crack inside the thread of one prop running from the middle to the end of the prop could this be the cause of the vibrations and whistles ?