There is a linkage adjustment down at the trans for sure on floor-shift cars. For the column shift, I'm sure someone else can chime in with that answer if it is not the same. Bushings wear and things get a little sloppy over the years, that can be your issue. Another culprit is the Neutral safety switch. That little guy on the trans makes the ground circuit for your starter relay in neutral and in park, also works your reverse lights.