+1 On this comment. The trackpad replacement kit from iFixit does NOT include the hinge plates. The hinge plates must be removed from the removed from the old trackpad (and the additional six screws holding in place). There is the need to replace 12 screws total in this step AND the removal of the old hinge plates to re-use, and re-install on the new, replacement trackpad assembly. This is a critical miss in this step's directions.