Mastin's Insane Tells: Revisited.

[Mr. Flay]

The other thing about the Butter Zone is it provides momentum. Wagons with less than 1/3 of the required votes tend not to get anywhere, and ones with more than 2/3 tend to get scrutinized (and often fall apart, which is a separate 'problem'). Hitting the sweet spot provides you some cover, though I'll argue that position is becoming less important as the tell becomes more known.