Gr. Both
Blue left
I would like to stay and chat but my wife needs my attention.
OK. Those graphs look pretty good. Left and right are almost all the same except for in the sub region. Make sure that the settings on both of the sub amplifiers are the same. Make sure all switches and knobs are exactly the same. It might just be that the left side is turned up louder a bit. You can see that on the graph.
Next, pay attention to where the green line is lower than the left or right measurements. That is an area where you are getting phase cancellation between the two speakers. 2.6kHz-4.5KHz is cancelling a bit and that is an important spot for intelligibility. It's not terrible there but it's not great and we might be able to fix it by changing your listening position or turning the speakers in towards the listening position.
So, first. fix the sub settings then make sure that your mic is equal distance from each main speaker. Try to measure right in the middle of them, which should be a good listening spot. I would use a tape measure to make sure that the distance is within an inch or less from the tweeter on the main speaker. Then show me those measurements and we can go from there.