If I keep the mast about half the test I don’t have any estrogen related sides. I have had bloods on 600 test/300 mast and estrogen was 71nld. I felt the best I ever had, sex drive cray, focus and motivated, full,strong, dry af, and fat falling off. I though DHT had that great of estrogen control! Also was taking 1mg of finasteride for hair which should of in theory raise estrogen because the blocking of dht pathway when the test is converted.