I did read that Sonny Red took $1,500,000 worth of heroin on consignment from Sciascia and Lopresti and he never paid for it. Maybe the zips agreed to offer support if there was repercussions or maybe they didn't get their cut?
I also read that The Chin was backing Sonny Red in this deal/scam.......I am not sure how there was no repercussions from someone just outright stealing that amount of product from an ally. The heroin had to have come from the Rizzuto's which maybe led to why Vito cut ties and went independent. Who wants to be allies with someone who steals from you?