[Lobotomy^]

You only seem to measure sub response, but corner traps might have big effects on clarity of main speakers.

I recommend making all the measurements with one speaker at the time. One sweep for L, R and sub before installing traps and then another three measurements with traps in place. It's really hard, or impossible, to track the effects of traps when there is three speakers playing same frequencys. You might get deepers dips just because you dump echoes and sound from speakers happen to be in opposite phase.