Yeah, the sleeve should always be in the lower mount rubber bushing. The ID of it is slip fit on the shock mounting bolt. this allows for installation/removal of the mounting bolt while maintaining a tight tolerance between the shock mount and the bolt and not have to fight a bolt through tight fitting rubber.. Side note:The inside end of the mounting bolt is the alignment pin for the caliper mount/stabilizer.
In Post #3 : In the first picture you can see the sleeve at the bottom of the threads( I pried the lower mount with the screwdriver as shown ) the second picture is the lower shock mount popped out of the mounting slot ( you can see the sleeve diameter got bent) the 3rd picture is the mounting slot it came out of.
The sleeve got bent when I pried it out of the slot because over time the sleeve had worked it's way outward and may have been slightly into the backside of the threaded hole - none the less it was an interference that I overcame with the pry bar/screwdriver.