Johnny Gotti biggest mistake was letting in that siggy Sammy the bull into the top echelons, Scarfo told crazy Phil never trust EM siggies. Among (most) wise guys this is a told you so mentality. Everything has a purpose Gotti was not a siggy and so he didn't rat Gravano on the other hand was a siggy and hey " I told you so"... Book "mafia prince" Phil leonitti