Ck the small plastic bushings on the shifter and trans where the shifter linkage rod fits into. If they are bad the easiest way to fix the shifter bushing is to remove the shifter assy itself and repair it on the bench. Does the shifter feel sloppy when shifting? If so the bushings are probably your problem.

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.