UPDATE: The 3DR Compass/GPS fits perfectly in the old file, except the holes for the cables are slightly in the wrong place. I have updated the file and am printing it now, If there are problems or a need for an update I will let you know! This is based off of and highly inspired by the Omnimac 3DR GPS Stalk. The only big change is that I have not included the mount at the bottom to allow for other mounting options. I plan on putting this on a 550 Hex and plan on CA'ing it to TEKCRUZER's F450 GPS Mast Holder.