Not sure if senter and testa were junkies; they used coke but i dont think they were deranged addicts.
As for polisi, in another interview he claims he cut the guys scrotum to scare gim, he never castrated the guy. I never did believe that he avtually cut off another guys balls. Only a sick sadistic person could do that. I dont think Polisi fits that profile. I dont even think Demeo would have done that.