.... The bushings are also rough to get in. I had to use a vice to install mine so I am not even sure how i'd get them out without destroying them.
In my experience (KOR Bushings in the IRO adj. track bar), this ^^^ is the problem.
The KOR bushings are such a tight fit, that any grease that you put on the bushings at assembly is just wiped off when you press the bushings in, resulting in no grease being in there.
This resulted in stick-slip CLUNKs for me.
I took the bar back out, and pressed the bushings back out. Hammer out the inner sleeve first. Hold the bar, and then when you hammer the sleeve out, the far-side bushing will likely come out with it. Then you can get it apart. That's how it worked for me.
Then, once it's all apart again, I took a flat file to the OD of the KOR bushings. LIGHTLY remove material from the OD of the bushings, going around the bushing to try to keep it as round as you can. Make it more of a TAP fit, instead of a PRESS-WITH-A-VICE fit.
Then, I did the same with the ID of the bushings, and used a round file to take some material out of the ID, until it was a tap-fit (and not a vice-fit) to get the sleeve in.
You still want the fits snug, but not "I-need-a-vice-to-put-it-together" snug.
Grease it, put it back together. No CLUNKs.
This worked for me. I was going to go with a grease fitting, but the fits are so tight, I doubted that even a grease gun would get any grease in there.
Good luck with whatever direction you take.