Thanks for all the help. I actually don't think I'm having nodal issues. (could be wrong) I'm running a pair of OB servos plus a bipolar Mirage in a huge space compared to the typical listening room.
I'm just not sure I've got all the phase angles, crossover points and levels dialed in optimally. I find I'm constantly fiddling w/ the setting.
All in all, it sounds very good for the most part.
Also, I sometimes mix sound for bands at live shows, and a meter would help me dial in their rigs.