suspention is my weakest area, but what i have found is that stiff front suspention makes the front loose, softer ft suspention makes the ft track a little better. also keep in mind this changes if you go to the extremes. the biggest thing i reccomend is take detailed notes of every change you make.
i have noticed that the rear suspenton, bike geometry, rider weight and ridding possiton make a big differents. i am 6' 3" and my suspention settings are way off from my buddy who is 5'10" good luck playing with your suspention