I need help with blacksmith

I am already at 300 on blacksmith but i didnt complete the quests to specialice into armor, i cant get the items to complete the quests of Trenton Lighthammer because the items that drops are from an enemy of zulfarrak wich i see it's lvl as grey, i am already at lvl 56, i don't know what to do now, i dont see the recipies on the acction house eather. Help pls