Without looking into it more carefully and just a quick reply here, perhaps the G/A F speed is different as it is the F speed with 1 flap less? Ie not full but Flap 3. Whereas the F speed is for the fully config App speed? Just a thought! Regarding the A330 lighting, the STORM is hotwired to the bats and so why not either turn it on when you need to or use your torch that you can never get to as your Nav bag is in the way. Absolutely a nonsense reason to leave light on for T/O, don't we turn OFF the LANDING LIGHT when landing in FOG if it's distracting, so why have the O/H lights on if not wanted for T/O?