Hi everyone, I've recently acquired an Olympus FL-600 flashgun but I've noticed an anomaly which I can't figure out. When I use this flash aboard my EM1 I have access to the full range of flash modes. However, when I put the flash onto my EM10 I cannot select TTL-A mode or high-speed sync modes, they're just not showing up in the mode pane on the flash's rear panel. What am I doing wrong? Any thoughts will be appreciated.