try dorian yates high intensity training, and only train 4 days a week, but do it hard. Google yates "blood and guts" training split. This concept (along with quality gear) of training HARD, not like most americans train, is what changed my physique from the local champ i.e. the guy who could get any girl in any bar, to a physique that has placed in top 3 of all my competitions and has a true chance of getting a pro card this year.
Don't get me wrong- this dorian yates training concept is worth NOTHING without gear and unless you are 24 or younger GH as well. But on the other hand, even if you are on the best gear and pharma grade GH and you only go to the gym once a week, or you go a few times a week and do everything wrong you will still just look like a gym rat, never a pro.
So if you are on AS, as you say you are, then take advantage of it: train right. Although, in my opinion, 500 mg of test is a cruise not a cycle.
ps. This concept of training (only training 4 days a week and training HARD HARD HARD when you do) got my arms up to 20 inches @ my biggest, and as people know on the steroid part of this board, I am around 6% bf and one of the bigger bodybuilders still in amateur ranks at the moment.