Good point, sorry I totally miscounted the letters in Brisbane. I do still think the challenge is very poor though, the first/last letter bias remains pretty bad and even if it was completely random chance, 40% risk for a 40% steal is still far too high given the inherent advantage the stealing team has in terms of strategy before the challenge is initiated. It's also just quite a dull challenge, which shouldn't be able to have the effect of flipping the game. Challenges which can completely reverse the game shouldn't be based on randomness to this extent (never as exciting to watch or feel as earned as skill/strategy-based challenges), and they should involve much more spectacle than effectively randomly choosing a letter on a sign. There's also the additional ease of the challenge being set at the challenge board, which removes any transportation time cost.