While im driving down the highway, and let off the throttle, coasting, or just m=not in it hard it will move out of 4th. I can accually watch my shifter slip into neutral. Is my linkage not adjusted correctly, I have a rebuilt shifter block, and I will admit the linkage is old, and Im sure its sloppy.

I can also move the shifter front to back about 1/4" at the shifter itself.

Any help will be appreciated...

kasey