I'm actually in the same boat. Even with the rainbows I have, these bosses on the 80 are just wrecking all 4 teams. Team 1 and 2 put up the best fight but they sustain too much damage to follow through on the next boss. Team 3 and 4 are still too weak for clean up. So I'm in the same boat with you all missing out on loads of FG and rose medals.