oldguy, I'm an old guy, too and really can't help you out with this particular issue. Best I can tell you is to call customer service again and hopefully get through to somebody.
I know the Saber riser used to be cast. Whether they are machined now is not something I'm aware of. I know that way back when metal risers came into vogue they were all cast and broken risers were fairly common. During any casting process it only takes an air pocket or two for trouble to happen.
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