When Charlie Caldwell is on the stand being questioned, the defense lawyer makes a comment about not needing a license to shoot off your mouth. The people in the courtroom are shown and one sitting near the back is Charlie, who is still on the witness stand.
During the trial, the pliers that were used as evidence, do not have a spring mechanism. They are a simple parallel mechanism that is manipulated by hand, not by spring retraction. So, there could be no broken spring. The pliers are made by Sargent of New Haven Conn.
Billy says Sloan took his wire cutters to cut the wire fence, but Sloan rode off without taking the wire cutters, in fact he had nothing in his hands when he mounted up and rode away earlier in the day.
When Pike deals out Maverick solitaire for the second time, his shirt cuffs have changed. It appears that they used a professional dealer. When they cut back to the view of the whole room, his cuffs have changed back.
The deck of cards is a modern deck with modern printing and numbers in the corners. Decks in the old west did not have numbers printed on them and the printing was crude.