INZ advise me that it is imperative to have the X-rays registered into their system before the 3 month validity expires.
If you could despatch them all to me I can have this auctioned by the same immigration officer who will process the extension applications in NZ.
The alternative is to submit them to the respective embassies where the TWPs were originally processed and have them register them against the applicants names.
If practical I recommend sending them to me.