Is there any place to get official analog nub caps?

Hello, long ago I lost my original analog nub (when I switched over to a now broken, crappy 3rd party version) and I was wondering if there is possibly any place to buy an OFFICIAL analog nub cap?

Or at least a 3rd party offering that's as good or better?

Thanks

The SONY STORE (thats the actual shops name) man you can find them in malls and such

also u can buy of the internet if you want

Yeah I already looked at the Sony Store website, and found no analog nubs. Also, the only ones I've found online have been the really crappy 3rd party company versions. I just want an official analog nub, and doing a search for "PSP official analog nub" comes up empty.

theres onehttp://shop.brando.com.hk/pspanalogstickreplacement.php
another
http://www.mrmodchips.co.uk/catalog/...roducts_id=189
and heres all STOCK parts 100% http://www.xboxrepairguide.com/repai...2033226f5edce6