Oh, I see what you were saying. I don't think he ever shows that the entire back sides are blank, just that half of each is blank on part of the deck. If he has some cards that are fully blank he can show those, but any time there's a fan he only needs a half face to be blank. If he only ever fans one side, he has 156 halves to work with. If he fully fans both sides he has 104 to work with. He only needs full sides blank if he cuts at that card. Didn't he discard much of the deck before fanning? That would mean if he's careful he might even be able to have all four half faces used in the numbers section (or maybe the suits, actually, 4 suits and dividers help him count numbers section. Hey, that mekse sense, that's a fixed cut every time if it's the suits, he could put those 4 on the same cards without having to count, possibly), just make sure the trim is white where he is counting. He just has to dump those before he fans, but it would really let him condense the numbers section.