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To add to Ray's note.
What made everything click was using CCDSOFT V5 for the PEMPro calibration Wizard.
My guide camera is an SBG ST-i. I had forgotten that CCDSOFT V5 came with the ST-i and was trying other software/camera combos. Once I used CCDSOFT and the ST-i with PEMPRo V2, the calibration and PR correction worked like a charm. .