Thank you again.

This morning I removed the nozzle and let the printer feed PLA for about 5 minutes. There was no jamming, or skipping at the feed gears.
So I think the feeder motor and gear assembly is fine.

Now I'm looking at the print feed speed. I don't recall changing any settings in the Gcode/Slice file, but it's possible the Cura Program might
have reset, or changed some defaults, or maybe I clicked something by accident?

More later...