i am currently running test 700 mg deca 480mg tren 500mg wk and using letro 1.5mg e3d, i just finished 6th week and the only sides i am having are tren related insomnia, sweats and aggression.. i feel great and am seeing really great gains.. some people are more sensitive to 19 nors than others so i would just keep your doses low at first and definitely use an ai.. i would also recommend using tren ace to see how you react to the two 19 nors since deca has such a long active life, you could stop the tren ace and have it cleared in a few days.. that would just be my opinion..