The problems I encountered when trying to edit the values for reflect, spell spell and thunder (20, 40, 80). There is some math going on here when it comes to changing those. In other words you can't just change the values from one to the other, glitches start to pop up. Like wise if you go into spell routines and swap them around, glitches will also pop up. It appears there is some math going on here that I am not of to achieve the desired results. If I change reflect's 20 to 60 (20+40)spell spell works fine in it's place. If I change spell spell's 40 into c0(40+80) Thunder will work in it's place... just a little wonky and thunder is also able to open the hidden door in New Kasuto.
Does anyone know how I could go about altering the last 3 spells?