mikem1, just so you know that is not 100% the case - the fans spin more aggressively than before, but there is still a 0 dB mode.
OP, did you flash the secondary BIOS to both of the card's BIOS slots? The primary BIOS is the 0 dB one, and the secondary BIOS always has fans running. Or perhaps did you forget to chance the BIOS switch back to the primary/master BIOS after flashing the secondary/slave BIOS?