I can't seem to get Tenpines Bluff to upgrade to level 3. Happiness is over 90, and it has been level 2 for a long time. (I have had settlements go from level 0 to level 3 in the time TPB has been lvl 2). Its possible something got messed up though. I had preston leading the settlement, then went to take the castle. I got all the relevant notifications that preston was no longer leading and stuff, and once we took the castle, I re-assigned him to city leader. Ever since then it has been sitting at level 2 with only 10 people. I manually added some more plots to try to boost population/jobs but it seems stuck. Anyone have any ideas?