This evening, I watched a Clough42 video where he discovered an issue with his cross slide saddle.
I checked my 602, manufactured in Mar., 2013, and I don't have this problem but many of those who replied to his video did. It is something for 602 owners to check.
On another note, I noticed that he has a hole about an inch to the rear of the second cross slide gib adjustment as mine does. This is the location of the cross slide lock on my lathe mentioned in post # 24 above. This is an undocumented feature in all of the various G0602 user manuals that I have seen. It is a simple matter to add a screw to enable this feature.