Stern Tutankham PCB Repair - Finale

Out of pure desperation, I toned out the connections going to the 4164 DRAMs and found a bad connection going to Pin-5 (an address pin) going to one of the DRAMs. From the beginning I suspected a DRAM problem, but the self-test chip was reporting no RAM problems. So now the PCB is working great, but still have a strange audio issue that may be due to it being a bootleg. The sounds are correct in the attract mode. Other than the player fire sound repeating at times, the game is playing great.