hey guys im on a cycle of dbol/test several weeks in

every other muscle on my body is growing like a weed, except for my biceps, they aren't going anywhere. my usual bicep routine consists of

barbell curls 8 reps
barbell curls 4-6 reps
barbell curls 4-5 reps

then maybe two sets of ezbar curls

and 2 sets of hammer curls for about 6-8 reps

ive tried soo many variations of techniques and nothing!!, plz somone help me out!