Receptors-shmeptors, use a good AI, stack those babys up and enjoy the ride. Again all this fear and steriod mythology about prolactin, progesterone, receptor saturation. Aromatase estrogen is the issue to adress and Letro or A-dex will take care of that.
Deca, tren get blamed for this "deca dick" syndrome, when it is simply a shut down HPTA and a lack of exogenous test that causes the problems. Androgens will also enlarge your prostate, which also can lead to ED. A lack of estrogen can lead to ED and libido problems. Pretty much just messing with gear in general, no matter what you do will throw your whole reproductive and hormonal system in the shitter. There is a way around it though......stay natural.