Mardy
You need to ignore left right movement of the star in the eyepiece and only focus on movement up or down from the centreline of the reticle, so what you describe is correct. This applies to both azimuth (east west) adjustments for a star in the north, and altitude (up down) adjustments for a star low in the east. Adjust your mount knobs and see if it makes it better or worse. Start with larger adjustments and then fine tune. When you turn an adjustment knob, the star will move both left right and up down. With each adjustment you'll need to reposition the star in the eyepiece on the horizontal reticle line, somewhere near the centre of the field.
I'm in Adelaide and can help if needed although I'm not familiar with SCTs on wedges. pm me if you like. You could try ASSA chat too.
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