All,   I have been working on designing a new 384k daughter board to be mounted into the current SRAM socket without having to piggyback chips for the original 3x128k mod to get the 384k or install additional sockets for the a 32 pin dip 512k x 8 chip.   I received a few test boards to verify the design of the PCB.  Between referencing documentation that @InsaneMultitasker and @fabrice montupet website for details.  I came up with this PCB.  I did find a trace I missed, but i