Out of the Box? Maybe not!

[Dakota]

I agree the rule book is not definitive wrt the batter's box, but it is definitive wrt the position of the pitcher's plate and the length of the base lines (both of which should also be checked pre-game, but how often are they?), and the rule book says to make the correction and play on. Presumably, this would apply even if the BR was out by a half a step in a fast pitch game with the bases set for slow pitch which caused the OC to question the base placement.