I figured out the LoTW problem.  Thanks for your help, Dave!

I went to the Adv button and used the filter duplicate QSO's button.  That gave me 170 duplicates,  I then went and bulk-deleted them.  I hit "Add Requested" and that page once again filled with 170 Q's.  Used the "permit uploading" option (which needs to be re-enabled any time you want to use it, I found -- a good thing), ctrl-Upload to LoTW and things look much better.

DXCC totals look right.