Two of my hatchlings are refusing to eat their pinkies, ive tried braining them and this still fails, ive also warmed them up alot and they still pay no interest what so ever!
give them 3 days between each attempt so they don't get to stressed. i've just got one of my non feeders eating by using chick thighs instead. you can offer the thigh or use it to scent a pinkie. there's a really good guide on preparing a chick thigh on the forum somewhere i will try and find it for you