Then I would tempted to reduce the amount of rake on the shim and compensate to a certain degree by adjusting ride height.
Paul , theres no choice ,it was how GpN cars were made tolerable ,the difference even half a degree reduction makes on a stiff car was incredible , the first time I did it I found over half a second a lap .
Its the first thing I told Ronnie to do at Brands a few years back .