I've only received one that thought it would be more fun to bite than ball up. My boa was a completely different story though. She was super upset when I got her.
You really need to give him time to settle and I personally wouldn't start handling him until he starts eating for you.
When you go to pick him up if he's ready to tag you use a paper towel tube to touch his head. That's what I have to do with a lot of mine because when I open tubs lately they're all looking for food. They just get the look in their eyes like they're contemplating if they could swallow me.![]()