In this Hagerty DIY, Kyle Smith walks you through the simple process of diagnosing and repairing a sloppy shift linkage on a 1965–69 Chevrolet Corvair. From getting the car in the air and exposing the linkage to working systematically to find the source of excessive play and then correct it, this video walks you through all the steps required to row the gears smoothly.
Sounds crazy, but the floor automatic floor shifter I have in my '68 benefitted from new bushings. REALLY tightened things up. It's amazing what we get used to until we R&R something.