He hasn't been with you very long, so patience is the key here. I think you said he's been in many homes in his ten years, so he probably thinks this is also a temporary home -- why get friendly?
Just imagine if you were, all of a sudden, dropped down into a strange country -- you don't know where you are, you don't speak the language, you don't recognize anyone, the food is different, and you don't have any money or power -- wouldn't you be afraid? Wouldn't you attack anyone who came near you? If you've been mistreated before, you'd be afraid this new big person might hurt you too. Better to attack before you get hurt, right? Attack and run!
It looks a little different when you picture it from the bird's point of view, doesn't it! For all he knows, HE'S your DINNER!!
As an example, when I first adopted Angelina, my Parrotlet, it took ONE YEAR for her to decide I wasn't going to kill her. She'd bite and draw blood whenever I came near. I decided she was never going to be friends with me, but that I'd take care of her, good food, good toys, huge cage, etc. We just wouldn't be hands on, much less cuddly. I'd talk softly to her and move slowly when I was cleaning her cage -- in the hopes I'd not be bleeding by the time I was finished!
After the first year passed, she stopped trying to bite every time I came into her cage, but she still didn't want me to handle her. ANOTHER WHOLE YEAR went by, so now she'd been with me TWO YEARS, and she finally decided to bond with me and be my friend. She's now been with me three years, and we get along just fine. She will still nip a little when she gets the chance -- she's a Parrotlet, after all -- but she's come a LONG way from where she started!
So as you can see, a great deal of patience and time are needed to make friends with Tigger -- lots of patience and lots of time! Don't be discouraged, just keep working with him, and one day, when you come near him and he runs toward you, not to bite but to jump onto your finger and be cuddled, believe me, it'll all be worthwhile! Having a bird, such a delicate creature, trust you and bond to you, is a joyful experience!
Hang in there, it'll happen!