yeh my biceps struggle aswell in my opinion, however i've jus started a different bicep routine and i am noticing a 'shock' reaction already which is pleasing! have you tried concentrating on peak/length etc like some one above mentioned?
I have jus finished a fitness instructor course an the way the 'book' is teaching to do bench press is lower the bar until your elbos are inline with your shoulder blades, going past that an they say it recruits some shoulder etc. Although my personal experiance is that taking the bar about an...