shoulders are one of my best assets that and back...
i have found in my old age that SHOULDERS are used in EVERYTHING from lat pulls, presses, curls, hell i FEEL THEM IN SQUATS.. they are large muscle group w/ long protein turn over rate.. meaning SLOW RECOVERY... so slow recovery... easily used in every motion = QUICK to over train which kan HINDER GROWTH...
i think u should stop having a SHOULDER day and just do 1 Excercise for ur shoulders on CHEST day and do it as your FIRST EXCERCISE for about 3-5 weeks then after 3-5 weeks MAKE IT YOUR LAST excercise for that day.
if that doesnt work GET SYNTHOL
