I have one working 8MB Stereo unit that I copied the EPROMS from (IC19 and IC20) and wrote those binaries to the other machines.
They still give the memory size error message, and show incorrect memory sizes, so something else has been overwritten besides the EPROMS.
I wonder if its stored somewhere in the O.S. as well. Since the HD's are not working on the broken machines, I'm using a floppy to boot them. I have no idea where I got that floppy, as I've owned pretty much every configuration of Emax at some point, but that would explain why this isn't working.