You found this site and don't know the answer to that o.O
Sorry edited cause i forgot to answer. Yes it might go up but I think you have a better chance trying to asimilate it which means using some stone for another stat and hope that it changes the magic instead. Alchemy is expensive if your not a multimillionaire i wouldn't waste my time. I have seen it take 20m worth in stones at 7 deg 500k each prices on the most cursed wep i had. Some people say if your phys and mag reinforce is low then it is also a factor in increasing but I am not so sure on that one. Good luck hope you get it fixed