Ive been doing starting strength for 2 months and I have 2 problems: 1. My benchpress is starting to plateu, what should I do? 2. Saturday I train, but its the day after my boxing training, so my shoulders are really fatigued and if I do heavy benchpress like Im supposed to in starting strength, my shoulder will hurt for 1-2 days. What can I do instead of heavy benchpress then? 3. Can I do rotator cuff exercises at home 2 times a week instead of doing it in the gym?