Alot of the items you can craft at 50 require higher base stats like 347 craftsmanship but im completely lost on how im supposed to raise my stats that high. Im confused on the materia system. I tried melding some craftsmanship materia III to my headpiece and for whatever reason i only got 4 /5 stat boost on one materia and the other i get nothing from it. What does this mean and how am i supposed to increase these stats??