My set up is the GX7 with the wireless trigger to fire 3 yongnuo 560 III flashes. The issue is that when I go to 'Flash' options, I only get TTL mode and not the manual mode. Why is this happening. I want to enter full manual mode so that I can manually set the power lvl through the camera. I tried adjusting the flash compensation in TTL mode, but that does nothing. BTW, when in TTL mode, why is there an option for automatic exposure compensation? Isn't that the whole point of TTL? Thanks!