Could be the ball length is off. Take the shoe in your hands and bend the toe upward as if you were stepping off in your gait. Does the point on the outsole with the greatest bend, looking from the lateral side, match the metatarsophalangeal articulation of your pinky toe? i.e. does the pinky joint on the ball of your foot sit inside the natural bend of the shoe? If the ball length of the shoe is too great, your pinky toe will get crushed. Perhaps a wider, shorter shoe is in order. IMO ball length fit is much more important than toe/foot length fit.