I returned to the beeyard yesterday afternoon. I removed the Key Access Cap from each flow frame. I inserted two equally-spaced flow keys all the way to the far end of the frame through the TOP slot of each frame then simultaneously rotated both keys counterclockwise 90 degrees down into the "reset" position. I did NOT really feel, see, or detect ANY movement within the flow frame itself. I even applied a little gentle downward pressure on each flow key to make sure the comb was where it should be.
I also went back and inserted a single flow key into each frame with the same results, i.e., nothing. I even repositioned the flow key across the inside of the upper slot from left to right within the slot...basically amounting to left-center-right and rotated the key in each position. So I've done/tried every possible procedure to ensure the frames are in the reset position.
When finished doing this with all the frames, I looked carefully at the end of the top slot where the key access cap goes. As you know there are two "slots"...an upper and a lower. Before and after doing the above, the TOP slot had much more space (gap) than did the BOTTOM slot which to me suggests that the frame is and has been in the proper position all along, i.e., reset.
I removed two outside frames in one of the flow supers and did observe uncapped honey in the lower part of the frame. There were no signs of leakage anywhere. So I hope all of this says the frames are truly in the reset position (and have been).
As a side note, each of these two-month old package bee hives is busting at the seams with bees. They each have double brood boxes (8-frame hives with 9 frames) plus the single flow super. The top of the inner cover is jam-packed with bees in the space between the inner cover and the gabled roof. Ordinarily, with such populations, I would be adding more supers but from what I understand, that would not be the thing to do as it would likely cause them to not work in the flow super. I hope that's the right logic.
Thank you for your comments...still learning this new fangled way of beekeeping.