The injured finger that's still bandaged months later in the timeline of the story.
In the film, the children of Concrete go to high school in Chinook, as there is no high school in Concrete. In fact, Chinook is 268 miles away from Concrete, on the opposite end of the state.
During the finger cutting scene, the finger shown in close up with special effects is not the finger shown when the camera pans back to original shot.
When Dwight is shooting his shotgun during the turkey event, if you look closely you will see that there is no bullets coming out of his gun.
When they're all having dinner after Caroline wins the shooting contest, Skipper asks Pearl for the salt and pepper and you can just about see that Pearl is not wearing glasses. But in the next shot of her, she is wearing glasses.
Speedometer on car reads the same when Dwight Hansen drives erratically to scare Tobias and then later on when Tobias takes Dwight's car for a joy ride; also the speedometer says speeds of 70 mph plus yet the odometer never moves.