If they are quiet, and seem content, they are probably ok. I had one chick that hatched with curled toes. I was tired, so decided to wait to splint it the following morning. In the morning, I couldn't find the curled toe chick. That one just needed more time, and the toes were fine. However, as Egghead says, best to do it within the first 24 hours.
I did one with just vet wrap, and the other needed a splint to make it work. I'm going to check it in the morning when I could have a helper to hold the chick.