Il Mio Problema
Common problem with this generation of Macs: the trackad sometimes "clicks by itself"
La Mia Riparazione
The repair was super-simple but the excellent guide was still nice to have for safety.
Il Mio Consiglio
By using the guides anyone can repair almost anything! However, you should read all text carefully!
P5 Pentalobe Screwdriver Retina MacBook Pro and Air
MacBook Air 13" (Mid 2011) Trackpad