Where can I find first party joystick replacements for my GC controller?

[SaucyDancer]

Sorry if this is in the wrong place, I didn't know where else to put it. So I recently purchased a new controller off eBay and upon receiving it noticed the joystick has been pretty worn down. In the past I have bought know offs that were not first party but they didn't feel right at all. I was just wondering if anybody knew where I could purchase a first party replacement joystick?

Any help would be appreciated.

 

[Kadano]

Nobody has ever found a seller that offers Mitsumi (the company who produce the Nintendo GCC and Wii CC stick boxes) stick boxes. There are some third party ones, but they are bad.
By opening it up and carefully re-thickening the parts with epoxy glue (see my sig), you might be able to restore it to a tight condition. But doing so is not easy as you need to be very precise.