[drugstorecowboy]

Buy a can of

CRC Precision Electronics Parts Cleaner

Its electronics parts cleaner spray that pretty instantly and cleanly evaporates. Solved my drift problem with one use and have never had another problem.

[chronolitus]

This method does work, but not entirely (see for example https://www.reddit.com/r/nintendo/comments/b5aro8/comment/ej...). The reason is that the underlying problem is mechanical (a likely explanation at 7:30 https://youtu.be/Vid8lIXmZwE?t=451)