Did you determine that the arm isn't rubbing on the auto lift platform near end of record?
In the service manual there should be an exploded view of the arm and the automatic parts. If you can't find the adjustment screw and there's no picture of it, you might have to take it to a tech. It could be something else. You could try setting the damping and anti-skate to zero and make sure tracking force is correct and has a clean needle.
That table could be 30 years old. It's really impossible to diagnose or fix it long distance.
Regards,