I agree Jay, Zimm I would experiment on the toe-in angle. Having them aimed right at you narrows the soundstage overall width. Like Mojo, I used to do the same as you. I have found pointing them at a point about 2-3 ft behind me gives me a much better sound stage overall where instruments take of the whole width, and the voices are dead center, appearing to come out of the center channel, as they should. Probably will help your graph dips. Also, you don't want the drivers the same distance form the side and front wall.
