When the Omegas stole the carbons for the psyche exam from the trash...
... it looks like Kevin Bacon's character is replacing it with a duplicate carbon of some sort, am I right?
So what's on the duplicate? I assumed that it was a fake test substituted by the Omegas, but if that was the case then the Deltas should have IMMEDIATELY seen that Bluto & D-Day stole the wrong test, instead of discovering their error days later.
WHY would they still fail the test, if the answers were NOT those that they'd been preparing for? I'm just saying, if I stole a test from the trash, and saw a different test in front of me on examination day, I'd answer the questions differently, is all!