auto shifter question

[sjarrett71]

I've noticed on older vehicles that the shifter will move kind of smoothly like something has worn out, I know it does on my '72. On newer vehicles the indents are more profound and you get a better feel for the gear you are in. Is there something that can be replaced to make the indent between the gears be more distinct? Is it in the steering column or transmission?

Does anyone even know what I am talking about? Because I am confusing myself.