Near the end of the story, outside McGurrin Realtors there is a stencil-cut sign with push-through letters of which many are missing. At the start of the scene the bottom line reads, "H OME S FORGI", but by the end of the scene the letters are repositioned as "H OME S FOR GI".
When Matthews pulls the address paper from the trash, he moves the basket to his right at arms length. He doesn't lean down or drop it to the floor. It stays the same height as it was on the desk. Probably passes it to a stage hand.
As Dan is searching the motel room, he picks up a small trash can and puts it on the table before searching it. When finished, he hands it to an off-screen stagehand rather than putting it back on the floor,
Jimmy tells Mathews the plate number was "JZ 485" and then identifies it as a Texas license plate from the book of examples. However the Texas example in the book shows they have 2 letters and 4 numbers not 3 as Jimmy stated.
At the real estate office, in the reflection on the car's window when the door to the car is opened to place luggage in, you can see several people standing against the wall of the building. There is a man wearing a police looking cap. Probably an extra.