Really getting bad backne seems since I started the prop, NPP and mastron. I quit it while geting knee surgery, then went back on to jumpstart the healing and strengthen my atrophyed quad muscles, after the surgery backne came back as well. Its weird as its in the lower back not on shoulders, upper back, face, legs or any other part of the body as one would expect. I am also running test ethan 400mg per week and deca 200mg per week and just added some proviron 50mg am and 50mg pm to see if that will help with the backne. But its real bad they are the deep huge ones that hurt when you rub your back against your chair. Hope you guys can help. thanks!