Great guide - thank you for posting!

When reinstalling the drive, I trimmed the top and bottom rubber pieces for a better fit.

I had issues reconfiguring Time Machine to access the newly formatted disk. Time machine returned a “Please enter Server Password” - solved by going into Airport Utility and changing the Base Station Password.

I recommend also marking the top of the small connectors with an ink dot - at least the small three-wire one. Turn it over accidentally like I did and wonder why it won’t seat.