At the motel, when Black Lightning shoots electricity at Will's chest, the pistol Will was holding in his right hand is gone, and it isn't evident on the balcony in the crane shot when Black Lightning levitates Will over the railing.
When Jefferson returns to Gambi's shop to get the new Black Lightning costume, Gambi goes to the front door, draws the shade, and locks the door. However, there is clearly no lock mechanism on the door, he just touches the top of the door handle, but there is an audible click.