I control this tiny galaxy. I've left the Iridium with 4 planets and I intend to culture flip them, like I did Mars early in the game. Each is surrounded by 2 culture starbases maxed out. Each is within my border (2 decidedly so) and have been for about 80 turns now. Approval on those planets ranges from 26% to 100%. What is it going to take to flip those planets?