Hello Mountain Beaver and welcome to the WAYALIFE forum.
sorry to hear about the disco issue, but it seems to be a common thing among Rubicon's.
I had similar issue and I did fix it myself.
it is an easy job and definitely you can do it yourself, and it will cost less than ten dollars for gears grease and good RTV sealant.
However, doing it alone, It may take just takes few hours and some patience when cleaning the internal parts and resealing it.
NOTE: take it easy when cleaning the harness connector part (for that, I used a fine sanding paper to remove the rust off the electrical pins).
Also, make sure you disconnect the battery first before starting the repair process.
here is the link to my post on my fix:
http://wayalife.com/showthread.php?...-side-tilt-ability-on-JKU&p=175540#post175540
if you have any questions, Please feel free to PM me.
Thanks
snapfish