I took this today but it's probably not detailed enough to see well but if you look at the left foot you can see it start to crease on the same line as the stitching. It doesn't do this on the right shoe but my left is larger so that could have something to do with it. It makes it seem like the toe is a bit raised. It's not the most perfect place for a crease but that's where the shoe wants to crease. My walnut with leather sole in the same size only creases along the vamp.
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Interesting; I wouldn't've expected this. I'll let you know how my replacements look. Hopefully third time is the charm!