I've no idea what the little bracket is in the last 2 pics. Not sure that should be there.
The way I've uninstalled/installed mine is fairly simple. Put the boot on the shifter. Mount the shifter and torque the bolts. Screw down the boot and screw down the bezel.
View attachment 1716312350View attachment 1716312351
Mine needs a new boot the heat in the desert is brutal on rubber parts...