Does anyone know why a few of the screws have a plug like thing in them? Is it to see if you violate warrant? It’s like glue in the top so you can’t tighten loosen the screw. I want to tighten the screw because I found some loose ones but I don’t want to violate my warranty. DJI was absolutely no help when I asked them. They just said maybe it is a warranty violation but refused to tell me yes or no. Please help. My screws are loose. Also, if I replace any parts, does it violate my warranty with DJI refresh insurance? Thanks all!