Ok some progress on the gearbox now, I have stripped the main shaft and cleaned all the parts.
After cleaning and on close inspection I noticed some wear on the 1st and 2nd gear synchro rings. How can this be classified, little, moderate or severe wear?
All other synchro rings showed similair dull even wear pattern to 5th gear without shiny area's so I will leave those in. All dog teeth are still nice and fresh looking.
I already have some new Goetze yellow striped synchro rings for 1st and 2nd gear, but I can really use some advise on replacing the 1-2 synchro sleeve as well, based on the wear on the synchro rings shown in the picture.
Any advice on swapping 5th synchro to 3rd gear is appreciated?
BTW My car is from 1970, castings on the gearbox show it to be '76 and car has been standing still from 1998 so I expect the gearbox not to be used extensively.