Does anyone know where to source the analog sticks?

I would really like to know where to source the analog sticks for the portal. Both mine click. This is a common issue with almost all of them. As the stock of portals shows no signs of changing anytime soon I’d like to fix this problem myself the only problem is. I don’t know where to buy the sticks. It may be to early and no one has manufactured them, but I know that the quest sticks are close just don’t know if they match up.

Thanks and happy holidays.

Christopher C.