my only warning on taking it apart is not to force anything. i was being super careful, but still managed to bend & scratch the metal case. nothing major, but it doesn't look as pretty as it once did.
don't get in a hurry either. i think it took me about 30-45 min to get it apart the first time, but i'm sure the t3 is harder cause of the slider. see if there are some detailed instructions out there. i've looked a little, but i haven't found any yet for the t5.