Hi nelson10, these should prove of some assistance:-
Welcome to the OriginalTrilogy.com; Introduce yourself in here + useful info within…
About | Help | OT.com Forum Rules and Guidelines | Fan Edit / Preservation Forum Rules and FAQ
‘How do I do this?’ on the OriginalTrilogy.com - some info & answers to members’ queries | The General Assistance section.
The various pinned Index Threads located in the relevant site sections also contain helpful and useful information too.
In this instance, the ‘Some info & help for TN1’s 4K77, 4K80 & 4K83 projects of the Original Trilogy…’ thread, in the General Assistance section of the site, will probably be of some interest and help.
Good luck with it.