2) I believe that the enchant item spell only gets messed up when you train in elemental magic. So right now you are fine but when you go to expert elemental you will have problems. once you hit master elemental you will be fine again. (the problem is that each spell requires at least two types of magic to use, so when you boost each kind of magic (light, dark, spirit, elemental), then whatever spells use that magic will be affected - meaning that your chance of using that spell changes, each time you boost your magic skills)