Ok so i bought the Esky CNC upgrade off of E-bay. I think... it is the real Esky CNC (Not sure) but in the picture what are the rods? i know one is the feathering shaft but what is the shorter one?? This is not the exact picture of the CNC head i recieved but the picture clearly shows the extra peice. All of my parts came in Esky packages Not Plastic wrap. does that make a difference? did i get screwed?