The 3 thugs beat up Huggy and Colby. When Starsky and Hutch happen on the scene, Huggy is laying beside Colby, when he should under a pile of boxes.
Starsky and Hutch park outside of Parouch's apartment. It's the same scene as #1.12, when the guys park outside of Ted Banks' place.
Colby prompts the thug to punch him in the left eye, but gets punched in the right. Later at the hospital, the injury is under Colby's left eye.
The Gran Torino pulls into the mall parking lot with the rear of the vehicle facing Karen's Station Wagon. Colby looks out of the left side of the car and spots Karen. The only way he could have seen her was by looking out the rear window.
When the building manager goes back into the "not yet condemned building", the shadow of a man (most likely crew) can be seen right at the entrance. That man appears to head out, when he seems to realize they're still filming, and simply retreats back behind the left wall. The manager can be seen in the background, all the while.
At 12:47, the US Post Office window clearly reads "Palms Station - Los Angeles, California 90034". But the series is set in the fictitious location of "Bay City". In France, because of all these obvious details---including Hutch's house in Venice, CA which is in L.A. County---it was simply set in Los Angeles, and nothing is known there of any "Bay City" location.