Hello everyone, I am new to this forum and have purchased my first Phantom 4. After a few days and no crashes when I turned the P4 upside down I noticed within the 2 vision positioning systems there are two small silver circles in the middle of them. However one of them had come off. It looks like it was glued on and the adhesive didn't hold. I have found nothing online about this problem. I don't really fly the P4 indoors so i have not noticed any flight or stability issues outside but obviously I have GPS outside. If GPS for whatever reason gets lost do you think this will cause an issue? Has anyone else had this problem before? Attached are a few pics of me moving it around so you can see one has the little circle in the middle and the other one is moving around and not stuck in the middle.