So i did unlearn DragonScale Leatherworking to be able to go and learn Elemental Leatherworking. I did pay 100 gold to be able to unlearn the specialization, but when i arrive in tanaris and go to the npc "Narain Soothfancy" and i click the book to read it, i click the "i am absolutely certain that i want to learn elemental leatherworking." and nothing happens! Some help pls? Thx