With all the questions lately about pieces being knocked off the board, being forced to adjust a fallen piece, etc., it made me think of this common scenario.
Players often adjust more than their own pieces if one is particularly off-center. Is it OK per the rules to adjust your opponent's pieces, and what if he objects?
Can you do it anyway, and then when it is his move, he can readjust them to be off-center?
In practice, I doubt many people would have a real problem unless one player is constantly doing this, but it made me wonder.