Following closely.

As mine has a nasty shift to 3rd.

Mine will slam into 3rd gear on normal driving, almost like no springs in the front clutch is the best way I can describe it

If I lay into it and let it shift up itself, its not bad at all.
Plus mine will NOT downshift out of 3rd until darn near a full stop. Sucks when slowing down to make turns onto side streets or pulling up to a light and light turns green as an example, Ive got to where I pull it down to 2nd manually then shift back up once turn is completed

ps, Ive talked to the guy who built it 25 years ago and he isnt sure what was done to it back then