It should be a little bit easier to join the bolsheviks; I just did an SR easy mode game where all I did was adopt Left-SR positions, organize among the soldiers(after adopting anti-war positions), and once I had fully adopted left SR positions in like May, try to improve relations with the bolsheviks, and I still couldn't join the revolution. Also, the war maybe should be slightly easier to manage as well, but these are minor problems, overall, amazing game, I absolutely love it!