I know, that sucks. I don't have much time to do it either. I've got one or two acoustic shows every week in August, a wedding at the end of August, and full band shows in September. Practice, practice, practice!
The Whiplash thing sounded fishy to me too. Especially when they said "Since they're small cracks we won't charge you for the repairs, just shipping." Hmmmm.....maybe because IT HAPPENS ALL THE TIME! And maybe because YOU NEED TO DESIGN YOUR CASES BETTER!