Big Fellow,
I'm afraid you should have written down all service menu settings before "tinkering" as there are no standard settings.
The difference between two identical models can vary greatly; you could replicate the service menu settings of a ZD with "perfect" geometry and achieve even worse results.
"Fudging" around in the service/designer menus will also invalidate your warranty.
I would concentrate on the PARA, CNR, HSC and CPAR parameters to get rid of the curved lines at the sides; If you haven't already, take a look
here for a rough guide.
Good Luck.
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