Umm yeah.

If you just turn the top nut the strut shaft will spin with it, you have to hold the strut rod still w/ a wrench on the nut underneith the hat. (DON'T USE ANY OTHER METHOD TO HOLD THE ROD, scratches in it will tear the seal, blow your shock, and that specifically voids your warranty).

Another thing, don't use an air wrench, just hand tighten it gently (to only like 15 ft/lbs) unless you feel like buying another one.

Joel Baldridge, ASE Certified Master Technician, Audi Certified Expert Technician