I own the aluminum and composite motor arm reinforcements and have been hesitant to install them for a couple of reasons. 1. I currently have no stress cracks. and, 2. DJI representative said that they, if installed, void all warranties for their products. I spoke with a DJI rep and he stated that even if there is an internal malfunction and crash deemed not pilot error that they will not honor any warrant for the bird. I know what you may be thinking, if you crash, take them off and no one will know. But, do the motor screws have any sort of seal on them that may show that they were removed? Anyone thought about this/have knowledge about this? Are they worth the risk:benefit?