My brother's PSP is missing it's thumb stick. He isn't quite sure whether it broke off, or it popped out, but it's missing. There's now a small place where it looks like a thumb stick will pop into the plastic protrusion from the piece that slides around.

I've seen "PSP analog replacement kits" on eBay, usually including the small sliding piece that is part of the internals of the PSP plus the small thumb stick, but in my situation I'd like to achieve the goal of replacing the thumb stick while keeping the new hardware as legit and official as possible and to avoid things like eBay.

Any info you guys can provide is very appreciated.

-Otakon