We have a platinum female CB2014 that we purchased directly from the breeder after she'd taken five meals. She was a tiny little thing when we got her. We specifically asked for one that was chill, and she has never offered to nip or shown any defensiveness. It's a good thing she's got such a great attitude as she's only nine months old and around six feet long now.
If the one you're getting has only been maintenance fed then it's no wonder that it bites. Our girl has a voracious appetite.