I can say that the Draw-Tite # 75715 is a fit for your 2012 Nissan NV 2500 and I included an install we did on this exact vehicle. With that said, what I think is going on is the hitch is flexed a little. This does happen pretty often as the metal side brackets are not a super rigid steel. This is intentional as when the frame of your vehicle flexes, the hitch can flex with it and not break. However, this does mean that these brackets can get a little out of whack during shipping and or... view full answer...