Answering viewer question. Allis Chalmers B Rear Rocker Stud Position

Anwering a viewer question from the comments on my enigne disassembly part 1 video. Whether or not the rear rocker stud slot position can stop oil flow if it faces away from the oil supply port in the side of the head. What I noticed is the oil gallery is under the stud so position probably doesn't matter. This stud has a groove in it to let oil flow to the rocker shaft assembly.