Two places I know of to get a shoulder bolt. Caveat is, they are both 9/16 thread. The shoulder is nice to bottom out and tighten and have appropriate space to let the lever move freely.
If you have 9/16 and can use the bolts here's the low down. You may need to get your lever cleanly machined to accept the greasable bolt. I used the JB bolt with bronzed flange bearings. Same as what JB ships, except with a flange. I pressed in the bushings, they were tight. Once in, the pressure on the bushings caused the shoulder bolt to be too tight and not fit. I put a sand drum on my dremel and carefully swilled it around inside until I got the bolt in with a snug fit.
The new bolt with bushings work nicely.
I still got plenty of rattling from my linkage. I had to pull or push the shift lever snug to stop the rattling/ringing.
I got some spring washers and fashioned some washers out of a plastic milk jug. I used a combination of: spring washers, rubber washers and plastic washers to fill all the gaps where the linkage is cotter pinned together.
My setup is now quiet and shifts like new.
Good luck!
https://jb-custom-fabrication.myshop...lt-upgrade-kit
http://jkwoffroad.com/offroadproducts.php
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