Aaaagghhh! Has this ever happened to you? You're done with your novel except for the fine-detail editing, but something's always bothered you about the setting: there's a certain repeated action element that doesn't quite fit. You've tried to ignore the discrepancy, to explain it away, and for the most part you've been successful. But now it's about time to push your fledgling novel out into the world, and a nagging voice says, "Yes, none of your beta-readers have picked up on the problem, but what if someone does?" Changing the action element would mess up the plot, but you could deal with the issue by flipping your setting around. North becomes south, east becomes west, or, in the case of my WIP, right becomes left. The only trouble is, for the last months or even years you've visualized the setting the way it originally was, and your brain doesn't want to stop! I can explain exactly how this applies to my story if anyone wants, but right now I'm asking, have you ever been in this position? If so, did you make the change, and how long did it take before you could visualize your setting the new way? Or did you leave it as is and hope no one would notice?