I consider that it is still restoration, not new assembly becase of I use old plastic bases and ceramic hoods of IC's, Other components it is easier to replace on new ones of the same period, using factory technical info.
So there are four modules of first serial generation (beginning of 1976). All original ceramics are cracked, ICs not working, lens with fade, contacts are deformed, quartz resonators out of frequency.
I take new old stock ceramic plates, solder new capacitors, put on plastic bases with ready new old stock contacts, put working quartzes from 1980 and solder togeter.
Then I get new old stock ICs and glue them on ceramic plates.
Then using wire bonding machine connect ICs to the plates
All modules have good result - started and working properly. It is time to glue ceramic hoods and lens.
The proof of the pudding is in the eating...