At the Merry-Go-Round club, Leo removes Sheldon's hat. But, in the next long shot with Brad and Shammy looking on, Sheldon's hat is back on. Plus, he's slumped over and his face is not visible, so Shammy couldn't identify him. In the next shot, Leo has Sheldon's hat in his hand again.
When Bradshaw is in the apartment at 530 W.Houston Street and talking to the janitor, he has one pen in his handkerchief pocket. But on the following shots when he leaves the building and also while in the flower shop; he now has two pens in the handkerchief pocket.
When the two thugs bring the drunken Sheldon into the Merry Go Round Club and place him forcefully on the chair, at one point they take off Sheldon's hat. But on the following shot when Brad and Shammy are sitting at the rotating bar and Sheldon comes into view in the background, Sheldon is still wearing his hat.
When the two thugs bring the drunken Sheldon into the Merry Go Round Club, they place him on a chair. However, the thug on the left breaks character and reacts in shock to the aggressive but unattended impact of Sheldon dropping on to the chair.