Before I get to day 3, I should note that the team results showed that even despite a mistake on the weakest link (which was my fault, and not related to the misgrade), our sizable lead going into those two team rounds stayed sizable. So the US team took first place this year. Yay!
As a bummer, I messed up the Pento Office in round 12, but I still managed to top the round by a sizable margin. You know it was a good run when you can drop the highest-valued puzzle like that and still stay ahead.