which KW are you running?
for example - the stock front KW Clubsport spring is a 90-170. 90newton - 170 long.
You can order a 90-140 from KW. I know some guys running it because of the same reason.
And by the way: KW recommends to upgrade to a 120newton front spring as the 90 is basically too soft and your car is rollin too much.