Quoted from herg:
Which cables, and how much longer? I will try to address it if / when I make more. I don't want to make them too long and have to deal with a wad of wire, though.
specifically it was the 20pin connector one. I originally positioned my board 90 degrees different from your tutorial, as I wanted to avoid overlapping the big yellow sticker in the middle of my backbox. It was just about a couple inches too short to do it that way. So I had to position exactly like your tutorial to make it work.