Third party 5200 controllers?

Do these exist? I only have one working controller for my Atari 5200 and I really do love the system (Definitive home version of Berzerk, Zaxxon, Galaxian...) and I think my working controller is starting to go as the buttons are really becoming unresponsive...

What alternatives do I have? I've noticed many 3rd party controllers only have a 10-pin (2600/Genesis) like connection nothing like the 5200 (which is closer to the Neo Geo controller pin setup). Anybody have any knowledge?

you could always try to clean the current controller, process done on carts does works as good in controllers aswell.

A person at atariage took a paddle controller and a boxed keypad and made a homebrew controller, looks pretty nice. Don't have the link handy, but if you search the threads for it you'll find it easy.