[haleycookie]

I second the where’s the bone question.
Also heart is considered a muscle meat when feeding raw. Not an excretory organ like the kidneys. So I would add the heart into the over all ground beef mixture. Not the 5% excretory organs. Your ratios should be 80% muscle meat/fat (including heart), 10% bone (soft pliable bones such as turkey necks, chicken feet), 5% liver, 5% excretory organs (kidneys, lungs).
You could also do this 70% muscle/fat, 10% bone, 5% liver, 5% excretory, 7% veggies, 3% fruit.