I too have had shoulder surgery (bankhart repair, rotator interval closure, and anterior capsular shift) not fun. Even worse was watching a 300 pound bench go down to the pink 3 pound db's in physical therapy, which where still painful to lift. It took 2 years to get back to 135 for 5 reps, without it feeling like shit was ripping inside my shoulder. my deadlift came back much faster, within a year I was closing in on 405 again.
It takes time, a lot of what was holding my bench back is in my head and fear of re injury. Like one day 135 would feel light and a few days later I wouldn't be able to lift it off the pins because of the pain.
Give it time, read cressey's articles, focus on your upper back for a while, and you'll be golden.