If you are going with the stock motor, prop, battery etc, you leave it the way it is. If you are going to use a brushless motor, you might consider a small adjustment - BUT - most of us don't change the thrust line. Most just mix in a little elevator with the throttle. There are many modifications you can do to the EasyStar but they are not necessary, just fun. There are many people in the UK flying the EasyStar. Several of them post on this thread - http://www.rcgroups.com/forums/showt...73081&page=240.
Evan