I remember the story a few years back of a ref called Jim Hardie from Hamilton who was refereeing at Cliftonhill ( Albion Rovers )Before the game he noticed one set of goal posts were tilting i.e. Higher at one end ,he measured it and sure enough it was so he called the game off . Unfortunately for Jim because the 20 refs who hadn't noticed the difference and not to make them look stupid he was the one that was demoted ,that's yer SFA for you .