I don't think that the defense is an issue as much as the offense is. When they toughen up defensively, Sheed has been able to shut down Lewis (when he wanted to) and they make Howard uncomfortable, Tay can hold the fort down against Hedo. I think the key is to shut the little one up. If Pistons guards can stay in Nelson's grill for the game and make him play defense, it will be a much easier game for the whole team.