Hey guys,
for those of you who have had (or are having) a hard time getting really nice mwah from your wunkay, here is what helped...in my case.
I've searched high and low on setups for these beasts here on TB and the only things that I had yet tried, according to the posts I found, were to file the nut slots and lower the pickups. I just just spent a good hour filing down the slots almost all the way down to the fingerboard and I lowered the pickups some and extended the pole pieces (just a hair)....

OH MY! What a different animal! I was almost convinced that I would never get a satisfying mwah from this bass, but thank God I was wrong. If any of you out there are still having issues, you should really consider giving these steps a try.

Just had to share my good fortune
I must add that this was done AFTER I did a proper trussrod, micro-tilt, and saddle adjustment.