weight & balance

Hi; I have a Phantom 4 and I use some Polar Pro 'landing gears' which lift the feet up by .75" and can stop the AC flipping forward / backward during landing. Excellent little things that weigh around 10 - 15 grams each - I bought them from Hobby Mounts but lots of places stock these. Then I saw...

I have a new P2 which I am setting up. It has a DJI spare part No 7 camera mounting bracket fitted and a GoPro Hero 3+Black. In the vision assistant software, version 3.8, under the second section "basic" and the first tab "mounting", it talks about location and orientation. However the...