Hello, I'm new to wireless trigger flashes, and need some help. I got the yongnuo rf-603c II wireless trigger for the YN560-III manual flashes but it looks like it does not fit the hot shoe for my gh3 or gx7. I ordered the trigger since the amazon review said it worked on m43 cameras, but guess not? So what do I use to trigger the flashes? Please help. I really want to learn wireless off camera flash but this is bumming me out. Thanks!