Is there a good guide as to the ins and outs of Materia usage? What I am looking for is a guide that will tell me what level of Materia is appropriate for item levels. I am running into a problem where I can use a grade V Materia on a level 55 piece of gear and get full value but If I use the same type of Materia on a level 55 item used in a different slot I do not. Also can I not double up on Materia for a piece of gear i.e. 2 Grade V Craftsmanship will not give me +12 in Craftsmanship. I want to become better versed on the system before I spend anymore Gil. Thank You.