I don't think I would reference a very grainy "spy shot" as how things are going to be built. If anything, the last picture that was posted of an actual assembled machine (assembled according to the instructions) is what you should reference. That clearly shows the Y-axis C-Beams facing down, and in that situation, the cross beams will reduce the travel of that axis. Also, the official description of the functions of the machine posted on the build page state that the C-Beams are flipped to keep chips away from the screws. You will also note that they are posting the build instructions as we speak (not complete at the time of this writing), so that will show you without a doubt the orientation of the Y-axis C-Beams.