I watched that video and have a question: how is the alignment of the Dekoni pad done before sticking it down? There was a mention of a screw.
I use my old picture and little Edit. I draw a line here (its not here its on the other side) - its "end of the textil, foam" you will see it. And basicaly you line up the line (end of textil) with the screw where is the earcup attached. But there is 50/50 chance, because it is attached by two screws. The solution is to put the "big" side on the rear and "small" size on the front size of headphones. They have a big angle, you will se it.
I can post few more actual photos when im home in like 5 hours later.