You can't get there from here...
The upshot of these dozen mails is that right now in GEMS you can't get separate counter group columns and also have cumulative report precincts. It is, of course, a perfectly reasonable thing to want to do however.
A quick-fix might be to allow cumulative report precincts to be deleted outright from vote center categories. That would give you the countergroup columns without the questionable number of precincts reporting. Jeff, when you wake up, if this is what you want, let us know and we'll make it so. If you can get away with Tari's database, so much the better.