Well, your bf is lower than mine, but I might suggest a few things to try. Keep the widegrip pulldowns, drop the narrow; keep the tbar rows, if its wide grip, if not, drop them for barbell rows; keep the cable(seated) rows. Up all the reps to 6-8, and go as heavy as you can without sacrificing form, or getting hurt. Try this, if your willing, for a couple of workouts, and see if you dont notice a difference in your back. Save the shrugs for another day, and dont do dumbell rows, it may excascerbate a symmetry problem. Let me know if you give this a try.