When the gasman is lying on the floor, Eddie puts the frying pan in his hand. It cuts to Richie, and then Eddie hits him with the same frying pan, but he didn't pick it back up.
When Richie and Eddie knock the gas man unconscious his arm changes positions between shots
When Richie and Eddie are playing cards, Eddie is wearing a wedding ring.
This is the only episode where the gas meter is located in the living room. In other episodes (such as Accident - S1 E6) the gas meter can be seen on the wall in the hallway (a much more reasonable location for it). The relocation was required to keep the action with the gas man in the living room.
When Richie and Eddie knock the gas man unconscious you can see him move his fingers to grasp the frying pan when Eddie puts it in his hand.
In the opening scene where Richie and Eddie are playing cards, Eddie is seen wearing a wedding band on his left hand. Adrian Edmundson had clearly forgotten to remove his wedding ring before the camera rolled.
The gas man states he will be finishing work at 6pm. No explanation is given for why he calls at Rottweiller's house later the same evening.