I am not technically inclined, so I blocked my whole Saturday today for this (for me) big project. I made it a family fun time and my three older kids ages 8 through 5 helped. I made sure to go slow and label every screw and I am glad to report that I now have a very silent MacBook going strong after 10 years! :) Success would have not been possible without this very detailed guide and I thank you guys for it. Thanks, Alejandro.