Backing of the buttons crooked

I usually make my own buttons but couldn't pass up the deal on these. The quality is great and I like the finish of the buttons, I also like being able to proof my buttons before they are made. I am disappointed that the backing of most of the buttons isn't straight and level, they have to be pinned on at funny angles for the image to be level. I am selling them at a discounted rate because of this imperfection and will probably go back to making my own butons.