I tried the 190 OC flashed to the SPI and it seems to be working on 2 of my FPGAs. 2 COM ports are detected (22,23 for me). The weird thing is see the LEDS light up on 4 of the FPGAs as work is found, but MPBM is only reporting work from 2 of the FPGAs.

The only thing that I had to do differently is leave SW6 #1 ON in order for it to hash.
Guess it's the same issue I have regardless of which bitstream I'm using. I'm only getting work from 2/4 of the FPGAs. Any help would be greatly appreciated. Thanks!