Kev, I refer to my post #8. The release point is way back where the red disc is in your pic. That's not up to interpretation is it?
It's easier to see the green light flash in a rolling replay.
Have you and others compared it to another 1800m race, pausing it immediately the green starts on both?
But from memory that wouldn't have appeased Mel either. May have if Michelle Pfeiffer was cast instead of Julia, works for me