I love my walnut McAllisters but there's been a crease developing in the toe region (right shoe only) that's been bothering me.. The shoes fit perfect and I also have McAllisters in merlot that have seen as much wear as the walnuts but do not exhibit creasing in the toe region. I believe I got these from Amazon last year. Would this be considered a defect? Here is a pic of the merlot McAllisters.