Find a 3/8" reamer (NOT a 3/8 drill bit!!) and run it through all the bores of the adjusters. Sizes them PERFECTLY to the bearings, they'll fit snugly but don't "snap" which compresses the bearings. The old Associated adjusters are from OLD molds and REALLY REALLY need this treatment, but even the IRS adjusters benefit noticeably from this treatment.

I bought my reamer forever ago from Niftech, but any industrial supply company can probably provide one.

THEN use some sort of marker (I've heard of folks using White Out, I used a silver paint pen) and mark the adjusters so they're easier to read. Becomes important as your eyes begin to go to crap like mine.