Further to the question Bench press grip width, i have noticed that if the width is closer, muscles on my right hand close to my shoulders (sorry as i am unsure what they are called however someone suggested it may have to do with my rotator cuffs) hurt and i am unable to lift as heavily.
If the width is sufficiently far apart, the pain isn't as acute and i am able to lift heavier.
It is my understanding that a closer width bench press targets the chest more effectively however how do i avoid further aggravating the pain, increase strength and build muscle?