[quote=P.M.]Gray,
That ball has served its useful life and should be replaced. It's toast. Need reassurance, take a knife and carve a little piece off the side. If it comes off like wax you're o.k. If it comes of chalky or flakey, replace it. The piece will crumble due to UV rot. It's Delrin, btw.
Smaller balls are available from McMaster-Carr. You will have to drill and tap it yourself, which is really easy.
Steve, I still owe you a step ball.[/quote]
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