I'm guessing here. Have someone move the shift lever while you hold the lever at the end of the column, under the hood. If this is tight, then it's got to be in either the rod adjustment to the trans, or loose or missing bushings on the rod. I don't know what your car used, but it could also be just worn rod ends and oblonged holes where it goes thru.
I guess there could be a broken roll pin inside the column, top or bottom, but I really don't know. Just track the "loose" place down till you find it. And not running, you don't want the car running away with you under the hood.