Since I installed my rear shocks there had been a clunking noise coming from the back of the car, and it got worse as time went on. Today I took the shocks off and discovered that the top part of the strut was loose from the bottom. I determined that the nut between the rubber dust boot and the adjuster needed to be tightened up against the top part of the strut. I tightened this nut up finger-tight when I installed the shocks but it backed off.
I couldn't get a standard crescent wrench over the nut because the space between the rubber boot and adjuster bracket is too narrow. Basically, what you will have to do is screw the black frame that surrounds the adjustment knob upwards (this may require you to loosen the small allen nut on the adjustment knob so you can slide it upwards slightly). Screwing the adjustment frame upwards should give you the room you need to get your wrench on the nut and tighten it against the frame.
I couldn't get a standard crescent wrench over the nut because the space between the rubber boot and adjuster bracket is too narrow. Basically, what you will have to do is screw the black frame that surrounds the adjustment knob upwards (this may require you to loosen the small allen nut on the adjustment knob so you can slide it upwards slightly). Screwing the adjustment frame upwards should give you the room you need to get your wrench on the nut and tighten it against the frame.