07 tacoma front shock top bushing squeak??

hey guys,

ive been having this squeak on and off for a while now, ive finally narrowed in on it. its the bushing that goes at the end of the shock shaft through the shock top mount... after it rained today it was very loud, i got out the wd 40 and started spraying. then i took a wrench and spun the shock shaft, and it was gone. Shoud it be that easy to spin the shaft in circles? or should that bushing be compressed?? i took a vice grip and tried to tighten the shock top nut down more but couldnt budge it???

any help appreciated, the other side spins easy too but no noise from it..

 

The left front on my 07 does the same thing. I have tried silicone spray with no luck so unless I take the shock off and put so silicone grease on the bushing I'm stuck with it.