Gen8 Drive carriers

So, 

We have quite a few drives with carriers that have seen better days. (Sigh...)

Where can I get genuine HP replacement carriers, 3.5" LFF ones?

I tried a couple off ebay, and they were utter utter rubbish Chinese copies. Never again.

Surely HP must supply these as spare parts for those who have bits that are worse for wear?

Ive got an HP P/N of 

651314-001

But cannot find the "real" ones for love nor money. CheersHP!

Thanks