Hardison asks Eliot about the woman he almost married, and Eliot tries to avoid answering-- but the Leverage team has actually met her in The Two-Horse Job (2008).
In the wedding dance scene, multi-color actor's tape marks are clearly visible on the floor.
When Parker and Hardison are inside the FBI van, as Parker steals the FBI pass, you can hear the dialogue from when Hardison fixes the "baby monitor frequency."
When Eliot is in the server room looking for the files he is wearing glasses, just before entering the room he is in the hallway and no glasses are seen. He is never seen putting them on and there was no reason for him to do it.
When Hardison is moving through the house installing hidden microphones, he places one on the inside of the wooden front of a sideboard. This is a completely illogical location since it is facing a mirror in the middle of the sideboard and anyone looking at the mirror would easily spot the microphone.
Since Ray Palermo did not actually fire the gun he would not have gunshot residue on his clothing which would indicate that he was not the shooter in the restaurant.