Greetings fellow Jag Folks.
I have a 2003 XJR with the R1 package and CATS. While replacing the isolators on the rear shock, I noticed that the CAT shock has no flat area on the top to grab the internal shaft and hold it still while attempting to tighten the top nut. It's circular and threaded right to the end. Any guidance on how to tighten this bad boy down on the new isolator? I don't want to damage the top of the shaft as the CATS electrical connector goes right in through the top.

 

HEX KEY (Allen wrench) in the shaft will hold it while removing the nut.

 

That's it! The inside of the shaft is a hex! I had missed that, but now I got it all snugged up and ready for reinstallation!
Thanks very much!