I have a lot of trouble getting my Yongnuo RF-602`s to co-operate with my Yongnuo YN 460 flashes and my Nikon SB-800 flash. The oldest part is the SB-800 which is about one year old, all the other stuff is about 1-3 months old. So all of these should be working 100%, and they are, whenever they want to. Is there a spesific order to do this when connecting and turning it on? Like; attach the receiver, turn it on and the turn on the flash? I can try to get this working nine times, and the 10th time it works. What am I doing wrong here?