The disclosed systems provide ways to manufacture a style of an article of footwear in bulk, while providing customization for heel stability for individual customers. Moreover, the disclosed systems provide ways to customize articles of footwear for a customer on an ongoing basis, such that the heel stability of the articles of footwear is refined until a tailored fit is achieved for the same customer. Generally, the process may include providing a user/customer with an article of footwear, getting evaluation information about the stability of the article of footwear from a survey (e.g., asking the user to rate the stability of the article of footwear in a smartphone app), modifying the next article of footwear provided to the user/customer according to the evaluation information, and iterating through this process to give the user an article optimized for stability.