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You cannot lower a stock set up Porsche with the eccentrics, per the Factory Shop Manual. As for a corner balance, it isn't windy roads, it's everything relating to the wheels. Wanna try something fun? Take a Porsche that hasn't been corner balanced after being messed with and try a moderate effort stop, mine would lock up the right front and actually feel like it was accelerating with the light front wheel hydro planing on reverted rubber.
Good luck....