Well, it seems I blew it once again. I set up a Nuc this spring with my best queen from last year. I used the Nuc as a donor to strengthen my other hives and Nucs. All told in May and June I pulled about 6 frames of brood from them. Then about mid July I decided to let them build up to full strength. They filled out the first box quickly enough, so I added a second about two weeks ago. Lately I noticed that they don't seem to be gaining strength like they should. So today I did an inspection.
Gasp: the queen has less than 3 frames to lay brood in, hemmed in by honey on all sides. No wonder the hive can't build up. Now what? I moved a partially drawn frame next to the brood, but all my drawn frames are tied up in honey production. My extractor is undergoing repairs. Time is running out, since the eggs laid in the next two weeks will become winter bees.
The best solution I can come up with is: force the bees out of the second box (they have 3 frames full of honey up there) provide them with 3 blank frames next to the brood and hope they draw them fast.
I am not a fan of radical brood nest manipulation, but it seems that a checker boarding may be in order. I'm not that worried about winter stores, since I will have plenty of drawn frames after the honey harvest, which they will happily fill with syrup.
If anyone has any bright ideas I'd like to hear them.