It seems that over the course of the last couple years that my upper back has gotten smaller. I am not a big guy but it used to fill my shirt out alot more. It all started when I added deads and squats to my routine. I do about 6-8 sets for lats and 5-6 rowing movements followed my 2-3 sets of deads. My middle back seems to growing out of proportion. What am I doing wrong?