Karlin is right, sometimes the bite of a puppy will correct itself. You just can't count on it. If the puppy is not going to be shown, then the bite is not an issue. I would ignore the bite and select the dog that strikes you as right.
Personally, I wouldn't do anything about the bite. There is always a possibility of creating more problems than you try to solve. Also, if you try to fix the bite after the adult teeth are in, I believe it would be considered altering the dog, making it not showable.
Our boy has a slight underbite and we are showing him. Other than his underbite, he is gorgeous. He currently has 3 majors and 12 points. Based on comments by judges, he would be a champion by now, were it not for his bite. I think we will eventually finish him, we just have to get the right judges who think structure is more important than bite. So you can show and win with a bad bite.