I'm a firm believer in feeding smaller prey than most do. I don't mean to feed extremely small prey, but I err on the side of caution and I'm okay feeding a smaller meal, even if that means I feed more often. Less stressful on the snake and I do believe this could be a reason why some Balls go off their food. I have no proof, but I've always had better luck with my BP's than others. One of the things your told to do if your BP goes off its food, is to feed smaller. So why not feed smaller all of the time.

I'm not telling you how to feed your snakes, I'm just giving you my perspective.

Good Luck!
Jim Smith