[db8803]

If i were you, i would just  use the Online return center and return the original item, since it's clear this SE has failed. Create another account and try again with better storyline. Good luck!

Would be using the online return sender with FTID be to risky? @mothered Can you weight in?

It's an expensive item, it's most likely this won't work. As I said, just accept your SE has failed (return the correct item, get your money back) and move one to the other.
This is my opinion, you can chose to proceed otherwise and take your chances.