94 Integra RS - Over the course of the last few weeks it has become more difficult more often to get shift into first gear. Sometimes it simply won't go in. If I shift it into second, without engaging the clutch, then back into first it slides in fine...usually. But this afternoon, I had my first instance of it not going into second. All the other gears shift a touch rough too. One friend says it's just the master cylinder and another said it's time for a new tranny... What's your verdict?