I had to replace due to anomaly in flight as shown in a picture. Either a small lightning bolt or a gunshot. The discussion is still ongoing. Watch out for burn marks. However, a replacement is expected. I reused the original hex head screws that came with the Mavic. The interchangeable legs were very economical and easy to assemble. It was about 9 minutes total because I did both. There is also no size deviation. A photo shows the middle of the installation after the originals have been removed.