Very good stuff
kinda re-wording whats been said, i apply what i call "jigsaw piece" eq-ing to stuff thats interfering, aka creating a frequency "hole" in each sound, to give the other a place in the mix. for example (use your ears to determine the center freqs!!!!!!!)
kick - 3db cut of 180 hz 3db boost of 75 hz
bass - 3db boost of 180hz 3db cut of 75 hz
this seems to work quite well