spreads

I am also just going to submit the retabulation. I e-mailed CFA institute and asked if they possibly could have made a mistake and of course I recieved an automated e-mail in return telling me I could submit a retabulation. I replied asking if they have ever had an instance where they did mess up and switch candidates scantron or something (waiting for reply - i'm sure it will be another automated response.)

Anyway... still wondering:

-Has anyone ever heard of a retabulation ever being overturned and getting a passing grade?
-Has there ever been an incidence of them mixing up the candidate's scantron with someone else's?