At the start of this review I was skeptical that this sheet metal would actually make a difference. As a result of the tests, I realized that this device is 100% worth the investment. The range extender is very easy to install and offers instant improvements. I climbed from 1301 feet to a whopping 2667 feet (doubling the distance!). I have attached my DJI GO flight card to verify my details. Note that I haven't been able to get that distance on every flight I've made, but in any case the range…