Hmm... Not sure about rebuilding it, but we just replaced the bushing in the other end and the boot on the end you speak of. It seemed very tight even after 100k so we didnt replace it. To get it off, we simply unscrewed the nut to the top to protect the threads and used the BFH. It popped right off. Not sure if that answers your question or not.
"You can have things, or you can have kids, but you cant have kids and things because they will rat your sh*t!"
06 LJ Rubicon, OME HD springs, 2" spacers front, 1.5" spacer rear, Bilstein 5100s, Currie Anti-Rock on front, Currie control arms, 315/75 Coopers, UFC Ultra Clearance TT and Engine skids, in aluminum of course ;), bumpers and winch....Oh, and a pool ball shifter. That's good for at least 5 more hp....at the crank at least.
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I got home late last night and was just playing with it a bit .... took it out and it was noticeably stiffer ... my hand actually got tired from the effort[/QUOTE]