Wish I could, most of my hives are langsthroth, but they all I think will build queen cells. I had some this spring, I did happen to catch all the swarms. I think they may have swarmed because of older queen. I had bought established hives from an estate, so no telling how old the queens were. Two swarms queens died a few days after they swarmed, 1 went back to old hive, the other I requeened. But none of this is really helping, I have read MB's writings and others also, I think sometimes they are just going to swarm, probably wrong. Good luck
Joe