My T3's 4 speed (yes, 4) is becoming increasingly difficult to get into second gear, rarely when trying to change up and much more often if trying to change down - when it usually won't go into anything, sometimes sounds like it tries to engage, and very occasionally does go into gear. Don't seem to have a problem selecting anything else. The main shaft bearing was replaced when the motor was rebuilt under 12 months ago. Is this more likely to be selector linkages or something within the box? Linkage bellows rubbers mainly disintegrated, so I'd say it's had minimal maintenance over time in this area in its sub 200000 k's.