I understand your concerns about sending it back to us. Keep in mind, you are mostly only reading the comments where people had problems with their mechanical error submission. What you don't read about, is the one's that had successful ones, and that was most of them.
As far as re-emailing submissions, I have spoken with upper management. I recommend following my instructions that I gave regarding this book. That way, I am able to make sure everything goes smooth, and you don't lose any sig mentions on the label, ect... Anyhow, it's up to you.