Swapping a lift from my TJ to LJ and the shock bolt on the top does not want to come loose. The stud spins with the nut so I put some vise grips on the top of the stud but it still spins in the vise grip and just eats at the metal at the top of the stud. Any tips on getting this thing out? I can't cut it out because this shock has to go into my TJ in tact. Also is the stud replaceable or is it attached to the shock?