I still can't get the machine to recognize 8MB. Looks like 4MB. Keep in mind that this is/was a factory 8MB stereo keyboard, so no PALs or RAM have been changed around. I still think there's more to it than that EEPROM.
I don't think I want to chance the $60 or whatever it is at EPR.
So to sum up what I have tried here:
This particular 8MB Stereo Emax II one day displayed a "Warning Need To Recalibrate!" message. After that, the memory size error followed, and the rest is history.
I have now reprogrammed both EPROMS with known good images, checked all connections to daughter board etc, and most recently erased and re-imaged the EEPROM with the 8MB image from this group.
If I am missing something, please let me know.