I get pissed when things don't make sense and It looks like everything checks out but your pin still won't work. I have a Flash Gordon that I bought knowing the sound didn't work properly,(the reason why the last guy had to move her out the door.) I spent a few months working with Clive from Coin op cauldron on my sound boards. He eventually suggested that the Alltek mpu might not be reading the rom in the 2 board sound system so he sent me a sqwauk and talk to try out. Same symptoms occurred with the sqwauk and talk. I spoke with Dave from Alltel to see if anyone else experienced this issue and he said he'd never heard of this problem. I was just about to chuck in the towel when I came across a working Flash Gordon mpu on ebay. I figured what the hell I've spent enough time and money and I can always use the Alltek in another game down the road. Original mpu arrived and worked perfectly! I tried the Alltek board in my Fathom and she behaved like Flash Gordon! I had a bad Alltek board the whole time and was chasing the issue thruogh the sound boards. Doh!