Why would you want to take less of the most adrogenic and anobolic compound known to us? Tren is really unlike any compound out there so it is more powerful than test but should not be compared to it. Run that baby at your current dose and back of that Sust and you are going to see some big gains off of Tren. And like Mac10 said above Tren should have your libido through the roof and wanting to nail everything you see to the wall. Just run your AI's as needed and I had a friend who had the same problem it was a high Test dose during the first few weeks and he was taking in a lot of sodium in his diet so that might be somthing to think of too.