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In a large microwave-safe bowl, melt the chocolate chips; stir until smooth.
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Stir in the confectioners' sugar, vanilla wafer crumbs, walnuts, orange juice and corn syrup.
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Roll into 1-in balls, roll the balls in the additional confectioners' sugar.
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Store in an airtight container. (to get a uniform size, I used a tablespoon to scoop the mix and roll.)