I've got a A1398 Mid-2012 Macbook Pro Retina. Inevitably, I spilled a can of pop on the key pad... so no big deal, I start po...
Quote from Doug:
The two screws removed in step 3 should not be mixed with screws in steps 5 through 7. Though similar, they are actually slightly shorter and have a bigger head. If you put the longer screws back in here when reassembling, the button to unlatch the top will not work properly.
I think you may have commented on the wrong page. This page only has 3 steps, and the screws are removed in step 2, not 3.