Hi again peoples, just a quick update;

I got the original MPU up and running today when the new eprom arrived that i bought from Ken (skybeaux)  

I did all the modifications, required to run the single 2732 eprom in the U2 socket, only to find that i had some more work to do to get the board to boot up on the bench! I ended up having to replace the mpu chip U9, plus the U11 PIA chip (and their sockets) as well as U12 (the 555 timer IC). After all this was done i could get the board to do six blinks of the LED (no 7th without the +43 volts connected).

Fitted the board into the game and it booted up fine and into attract mode with all the pf lamps flashing as they should.. then.. when i closed the lamp insert door... no displays   at first i thought the display regulator had shat itsself again, but it was ok. Hmmm...

Anyway to cut a long story short, replacing U19 (4011) on the MPU fixed the problem!!

Only thing left to do is to fit the remote battery holder, i didnt have one on hand so i'll grab one tomorrow.

I still need to rebuild the flippers so it can be played properly, i intend to enjoy it for a while before doing the full resto.