Treating bearing edges

I have just got a used Generation 2 bongo made in 93. It looks like new, but the bearing edges need some treatment. Nothing serious, just slightly uneven. I know that bearing edges must be treated carefully, and I wonder if I should let them be as they are, or do same careful sanding. Anyway they need some kind of treatment, and I think I have seen beeswax as a possibility. Oil or lacquer can be tricky, since I dont know what the original lacquer is. Good advice much needed.
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