Oh I can tell "capped" drone cells from capped worker cells. I just don't know if there are more workers being formed or not. Guess wait 9 days and then know, but then I don't know if they are ones from 21 days ago. And if I wait until I notice there's no more "capped" workers, it will be too late with laying workers. But I looked again and still capped worker brood, and some larva in worker cells nearby and some in drone sized cells. And, I cannot count out the possibility of a replacement queen which has just started, so maybe wait. Just seemed odd with drones, but then there is that possibility of a failing queen and a replacement queen, so maybe best to leave alone.