Try and buy parts from DJI? After 20 flights with the Phantom 3 Pro the lower chassises, which are so poorly made, there are stress cracks where the motors are screwed to the chassis. They are so bad one motor is ready to fall out upon take off. Its no longer safe for me to fly it. I called DJI to get replacement parts, oh guess what? they don't sell parts to the public, nor do their authorized repair centres either. What a joke, really DJI get your S^*t together. The worst thing is they know all about these stress cracks and have appearently redesigned the lower chassis with internal bracing to address this problem. Great news except I bought mine used and it doesn't qualify for a warranted repair. Even though it was built using garbage components. This company and their drones are clearly a joke. Go to youtube and search for stress cracks on Phamton 4 Pro, this problem is still present on the 4 series really! What no R&D DJI ?
Come on If your gonna sell a product as least make it a decent quality, or drop the price in half. As for me I'll never buy another DJI product again, this parts thing has left such an ugly taste in my mouth I don't want anything to do with this company.
Be AWARE very AWARE!
Phantom 3 Professional owner