I'd say the stretch was more in shoulders than chest, but the chest is still quite intense
could it be I am going too wide with my arms, I dont feel it in the biceps tho
my shoulders are in proportion to the rest of me, I never do any pressing behind the head, or pulldowns, always infront of the body
flyes seem to be the only problem left
i used to go as wide as possible on bench, but have moved my grip further in and now dont get any problems there