Circle Pad is sticking to the right somewhat. How do I fix this?

Hi!

Have you spilled anything on the circle pad that might have gummed it up? Or does it generally feel like some gunk might have gotten inside the mechanism? If so, you could try to put a few drops of isopropyl alcohol underneath the thumbstick and move it around. If it’s effective, then your circle pad should work normally, at least for a while. If not, you might have to replace the mechanism, fortunately iFixit has a guide on that here. You can buy a replacement on eBay (here).

As for tools, you basically only need a Philips-head #00 screwdriver, like these here.

Hope this helps.