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Darn! I'm sorry...
Well, you could return it on his dime if the shoulder of the Gold Dollar has not been modified. Then it would be a defective set.
Don't let this discourage you, we've all made...

Those are relatively thin stones made for the Apex Pro sharpening system. I can see someone put this kit together to sell because of the, again, relatively high profit margin in doing so.
Unless...