I just leveled my char to 18 (4 paladin/ 6 monk/ 8 fighter) and took greater weapon focus to qualify for the centered with weapons enhancements. I cant select tier 3 of the weapon groups. I spent enough ap's and took the monk'ish side to tier 5, but I'm stuck at the weapon group selector. I tried both axes and heavy blades. any advise or is the tree now broken?