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Old 06-04-2020, 11:33 AM
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tbzep tbzep is offline
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Join Date: Mar 2005
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I don't know if it's mentioned in the thread, but it has been discussed that the early BNC-55AC was not shaped the same as later ones, or the current PNC version. IIRC, the reason was that the tooling wore over time and wasn't replaced so the cones gradually morphed.
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