Chain plates are out, now what?

[jrd22]

I've taken the chain plates out (well, almost)of the new to me 1988 Brewer 40 per the surveyors recommendation and I'm wondering how I check them, or where I take them to be checked for cracks, corrosion, etc. They look perfect, bright and shiny and smooth, but they are 20 years old (I think). Should I just have new ones made and not have to worry about them, or if they check out OK are they as good as new? I'm in Anacortes/Seattle area. Thanks, John