I don't know of the flaw , but I am not using it as a System as provided.
It is a guide that I am using beside my usual Market Making method.

But it has dropped my annnalysis from over an hour , down to less than 20 minutes or so.

Darren was no mathemetician, I've seen his work , but he knew when Favourites were a Chance of striking trouble.

The new times are because the Timing is not set off by the trigger anymore.
It is now set off by the lids opening.
GRV has said it has taken perhaps 2 lengths off the time for the Race.