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...all of my mechanical doings for the last five years are in a bike co-op setting, so I'm not much good for an opinion. I think you need high zoot shop mechanics, and many of them are too young now to have had any professional experience in the age of steel. I will say that, based on my real world experience, it was much more difficult to resell a donated CF bike, because there was always that underlying paranoia about how "it might be cracked somewhere, and how could you tell ?"