Most of the interior in my wagon is either in good shape, or is something that I can repair/replace fairly easily. However there are a few things that are proving difficult. One area that needs attention is the hardi board type cover for the interior of the tailgate. As you can tell, 56 years of kids climbing in and out of the way back have not been kind to this specific piece. I didn't expect to find a direct replacement, but for some reason though I am having a heck of a time finding material that is similar. Has anyone dealt with this before? Looking for suggestions.