Alright so after rereading the tutorial a few times and better analyzing the pads themselves, I have a much better understanding of how to do this.
I have a couple of questions though. After you cut the holes on the pad, doesn't covering them with the plastic mounting sort of negate that? Since you're covering the holes you cut anyway? Same thing if you decide to glue the dust screen back.
And lastly I see no sign of the plastic stopper which sits between the pad and the dust screen. Did you remove that too?