It doesn't have to be super precise. I made about a 1" cut about 1/2" in front of the pinch weld. Nothing fancy.Thanks AlbatrossCafe!! That makes my life so much easier! Ill be doing the mod this week. Also,roughly how many inches back is that yellow line? My 285/75/16 Falken Wildpeak MTs on Level Tracker Pros are rubbing and its driving me NUTS!