I don't believe that the elevator operator got shot in the baptism scene. When the door opens, he moves out of the way. I know its a shotgun, but I cant see clemenza moving his point of aim from straight ahead toward the 2 dons. To get a shot at the operator, he would have had to take at least 1 step to his left and reloaded, that's IF he felt the operator would have wanted to i.d. him after having the crap scared out of him by having 2 shotgun blasts unloaded at almost point blank range.