I have added a sure fire way to know if there is a nectar flow going on. It is a platform scale. These are simple to use and should help take the guess work out of how the hive is performing.
The hive weight on Sunday June 12th was 170 lbs. Today the hive weight is 176 lbs. There is nectar in the supers. I know that the hive has a nectar flow going on.