HP-33E - Three 8 pin ICs - Which goes where?

[DJSCaver]

Hi there

Not sure if you guys can help or not. Many years ago I opened up my HP-33E (solderless) because it was not reliable.
It has been open ever since and I have recently decided to re–assemble it. But the three 8 pin ICs have fallen out of their locations and I do not know which one goes where. Does anybody know which IC goes where?

The three ICs are:
00031-80008 Silver (from the web described as RAM)

IMAI 0004 SGP785024

IMAI 0378483 SGP3

Does anybody know where I can get a copy of the circuit diagram of a HP-33E?

And/or does anybody have a HP-33E for sale to replace this very sick one?

Thanks
Dirk
Canberra Australia