He said he is plateaud, eats 200g of protein, and 3500 calories a day. He will turn into a fatass if he starts to eat more than he already does.
op, durabolin is deca or npp, which are both injectable. Neither is harsh on the liver. Shoot some test at maybe 150mg a week with 400mg deca, or run 500mg test a week with no deca at all. That's what I would do.
Also, there are no links between steroids and cancer. Cancer is the least of your worries quite frankly.