winter is fixed. All winter bees are house bees now. Still working on figure out what's wrong with second season- very jagged, run out of room, and population collapses at beginning.

But we still have not enough bees to start new hive next season, it seems like. 
I don't understand how the population recovers from its collapse in the second March.
It seems like I should have higher survivorship through the winter, with the settings we have now.