"From my experience, the positioning of my 2ce sigs changed the balance considerably. Have you done a bit of experimenting with the speaker tilt and positioning in general? (My apologies if you've exhausted this route)"
Ultimately, you should do what sounds best, but I would highly recommend using the formula they give you in the owners manual. Once you have them in place, then deal with any problems. Issues are much easier to fix if you start from the proper position.