Not sure how but the stitching that is lengthwise on the face has a much smaller spacing on the used piece from WCCC compared to my original. By spacing I mean from hole to hole of the needle puncture along the length of the stitch. Mine is a driver car so not a big deal but I assume that a concourse guy or gal would have an issue with it. I would suggest making it part of the comments on what your stitch length is or buy a matched set.