in lance's training book "The Lance Armstrong Performance Program", he says that aero bars should be pointed slightly upward and that if they are angled down even the smallest amount it causes you to be just as un-aero as you are when you aren't using aero bars at all. THE PREDICAMENT: i was reading up on lance's NEW tt bike and it says that his new position has his aero bars pointing slightly downward, like Ullrich. which way is better? up or down? why?