If you have a Quest 2 and the joystick drifts this will fix it. It is a tedious procedure but can be done with a little patience. The main thing is don't get in a hurry and don't force anything. If it isn't snapping apart, try twisting the pieces differently.
I found a kit that should ship the joystick in a plastic box. The only problem is it only comes with one. They are just $11 on Amazon right now, so still just $22 to buy enough to fix both controllers. Here is a link to that.
https://amzn.to/42m92LL...
https://www.youtube.com/watch?v=RG1nGh52gM8