Manu is a big reason why my confidence is somewhat shaken. I always worry when he drives that he'll pull or break something. He's had some massive brain farts lately, even coming from him.
When you have some older players against younger guys, you always worry about the mileage.
That being said, as you mentioned we'll find out what this team is made of. I won't doubt the hearts of champions, especially if that desperation kicks in for another ring. If Pop can figure some things out and get out of his own way, and guys get desperate, I feel much better about everything.