Plating worn off at ball entry.Two divots - and tool marks.
Full view of divots. There are 4 sets. Each divot has been hammered - not worn - into the metal.
This trough has already seen a repair attempt. Here we have a ding in the metal from excessive use of ... a screwdriver? Bottleopener? soldering iron?
Not supposed to do this, but that 1/2 ton press only cost $15 at harbor Freight. I am hammering the post against the bent part of the trough. Did a nice job of getting rid of that ding!
After hammering - the metal is nicely flattened.
Level testing. When the trough is level, the ball should roll easily through the slot with no hangups.
Divots filed out, and trough sanded. It isn't necessary to get the edges straight. You just need the divots gone. I used a coarse file for that. Then I finished it up with emery cloth and sandpaper.
Finished repaired trough.
Here's our stainless steel ballstop - plenty of clearance to work on this machine.