Thank you all for you observations and responses.

Yes, I was also thinking the jockey cage plates were bent. When I noticed that most here agreed, I decided to take the derailleur apart to confirm. Yup. Both bent; the rear plate was the worse of the two.

One washer was missing, but l had a spare. When I put that spare in to see what things looked like the bend was obvious. All fixed now, plus I learned how to dismantle/rebuild a CDA RD - which is good practical knowledge to pass along to my buddy when it comes time for him to put the correct set of jockey wheels in there.

DD