I know on the B4 you can change the castor blocks to either 20 , 25 or 30 degrees, which I would assume is similar to kickup
From my experiance less castor gives you less turn in and more on power steering and more castor gives you more intial turn in and then can be a bit understeery when exiting the bends. I also think that with more castor the car is better through the bumps too. I normally use the 30 degree blocks, but occasionally go to the 25 degree ones and drop a front spring rate to keep the initial turn in.