I'm fairly new to setting up cars and like that the GT4 cars have limited setup options. I'm curious as to what the preload setting does. I found on the X-bow at 6 (the default) I find the car to tight with a severe tendency to understeer. I decided to drop it to 1 and the car feels a bit twitchier but turns in perfectly and I can keep more speed. What exactly does the preload setting do exactly?