Also, I have noticed a couple of teams have a +1 FF in a game they lost. You cannot gain FF is you lose, only if you win or tie. Here is how it works
When the game ends you roll 2d6 (or 3d6) and compare it to your current FF
if you WIN:
3d6 greater then FF, your FF goes up 1 point
3d6 lower or equal then FF, your FF stays the same
if you lost:
2d6 greater or equal then FF, your FF stays the same
2d6 lower then FF, your FF goes down 1 point
if you tied:
2d6 greater then FF, your FF goes up 1 point
2d6 equal to FF, your FF stays the same
2d6 lower then FF, your FF goes down 1 point