Personally I would want a hormone test so you know what is going on, the thing is that you don't know for a fact what your DHT, test, and various estrogen levels are.
The thing is we need to see tests from both positive and negative responders of both finasteride and dutasteride.
It may simply be a lower or higher does is needed or that something odd is going on with the different types of estrogens, or even further that the AR (androgen receptors) are becoming more abundant and sensative. There are many possabilities but the test will allow us a better understanding.
Otherwise I would suggest and anti androgen. DIM may be a very good option for you as it has been shown to not only be and anti-androgen, helping excreate excess hormones, but also has been shown to lower testosterone which may be by excreating.
The supplement is cheep, has tons of studies, and most importantly is used by a lot of people so you have real world experience to go on.