Last night I installed my new Rottendog Mpu011a and everything went very well except.....the explosions and voice sounds seem like the volume is cranked up on them but the ambient music and such still sounds nice and clear. I never had any problems like this with the original board. The volume pot still works as it should too. The only other thing I noticed with the new board installed is that there is a droning noise at attract mode, almost like you can hear that the speaker is cranked up to the max. Thanks in advance, everyone on here has helped me so much with the hobby just from me reading older threads.