Remix of Redstone Rig - For KAP - Added adjustment slots

Remix of Chris's awesome redstone Picavet camera mount for Kite Aerial Photography.
I added adjustment slots to the 3mm wide tray to adjust for center of gravity. I didn't want to have to drill into the printed plastic.
The top bracket now has a fixed hole to mount the camera tray. Also so you do not have to drill into the printed plastic.
You will still need the rest of Chris' parts to complete.