4th gear problem. I've had 2 Z32's, with no tranny issues. I was always easy on them, avoiding power shifiting and taking care to rev match. Also, I long ago developed the habit of skipping 4th gear most of the time, because I use 3rd to accelerate to cruising speed. I've only used 4th if I'm accelerating above 65 or so. Even so, I've wondered whether I just got lucky to have no issues.