It is looking better, glad to hear the root problem was addressed with tweaking and not a hardware concern.
A couple thoughts:
1. Yes, go for a house curve.
2. Yes, go with the BFD. I personally have a prefeerence for the FBQ2496 over the DSP1124P, but either will certainly do the job well at a reasonable cost, and available now.
3. Pay attention to any loss of dynamics or added low freq distortion you may be picking up using Sealed mode. Let your ears decide, but be advised that some pretty well done extensive testing has demonstrated that the Sealed and 10hz tunes can produce those effects at more spirited volumes.
Congratulations, and please keep us updated.
Tim
