I have tried using both Magic Prefs & Better Touch Tool for middle clicking with the Magic Mouse. However, for these to work, only the middle finger must be clicking the mouse. (i.e. you can't have the left and right fingers resting on the mouse when you click). This means that each time you do a middle click, you have to lift up the left/right fingers. Is there any tool that will let you do a middle click without having to lift up the left and right fingers (e.g. so you can still have the left/right fingers resting on the mouse when clicking with the middle finger).