Couple of hints when installing the Mud Busters. First off, you need to get the thing to a convenient height if you're an old guy like me. None of this crawling around business.
All went fairly straight forward, but I didn't want to use the self drilling screws to attach the rearmost part of the mud flap. There's a drain hole on the bottom of each square tube near the rear. I enlarged each of those drain holes to accept a rivet nut, size M6 - 1.0. Forward of that hole, about 2.80" (I was using a caliper) I center punched for a second rivet nut each side. I then drilled a new drain hole at the bottom of the rear black plastic tubing plug (visible in pic). Also in the pic are two temporary pointed screws I made to perfectly align the mud flap holes. I.e. install a couple of the front mounting bolts so mud flap position is established. Insert screw points as shown. Then tap the mud flap upward into points to mark spot for drill holes. Remove flap and drill - perfect alignment. (Note: to make points, I used portions of the M6 - 1.0 "ball end" screws used for the push button release door storage mod - though any M6 - 1.0 threaded rod would work. To make the point, wrap a bit of tape around the threads at one end to protect the threads. Gently chuck the taped end in a portable drill chuck. Turn the end against a grinder wheel, making sure abrasive waste doesn't enter the drill chuck. Protecting threads is necessary as the threads must screw in, then back out, using finger pressure only.
