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Primary Datum Plane

I am writing a program for a huge part, the primary datum for most of the feature control frames is B. So I am trying to use the primary datum plane function to level to. The plane is constructed out of 4 circles, when make the plane my theoretical has a positive vector for K but my actual has it as a negative?? I am trying to create a main alignment to dimension the part with and it is jacking it up. Can anyone let me know what I am doing wrong??

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