Hi ( sorry for the delay, I was on travel vacation ),
Unsure what the noob question was ? But for the print there is a screen capture showing which way they are supposed to be printed for maximum strenght. FDM is not the same strenght in all direction. It is the strongest in the direction parallele to the layers and the weakest in the direction perpendicular to the layer ( in the Z direction of the printer ).
I'm using a different y-belt tentionner for the moment, but doing a similar design for the y-belt would make the screw difficult to access being under the bed. I might give it some thought.