Instructions way oversimplify repair

Hi, I order 3 replacement batteries from ifixit for an ipod touch, an ipad mini, and an iphone. I started with the ipod following ifixit's recommendations and ended up damaging a wire that goes to the ipod speaker while removing the magnetic screen. your review makes this battery replacement easy, which it was definitely not. i am considering returning all 3 batteries and taking my ipod touch to get professionally fixed. i don't believe i'm a hack, as an engineer that builds and programs arduino equipment regularly but maybe i'm wrong.