I have a good front double biceps defination and all, but my back double biceps from lateral delt head to elbow is almost devoid of any defination except the triceps area.
i already do plenty of reverse grip and hammer curls. i've even constructed routines to bring up my brachilias muscles...high rep, low rep, lots of sets, every possible angle supine and prone, ultra heavy pulls, even set personal records on weighted close and neut. grip pull-ups.
i've only gained mass no defination. i've even dieted down and sacrificed muscle mass to get a shredded bicep pose form the back and nothing. i'm just looking for any tricks or ideas for getting defination in that area