There's no independent corroboration anywhere else AND Roy was hanging out regularly with the 3 Profaci Bros who lived across the street from his parents hose and knew him from childhood. There's no way Roy would've sided with Galllo's against the Profaci's, for crying out loud. Roy's mother lived with Profaci's widow in Bath Beach when she returned from Italy after leaving Brooklyn after Roy's father died.
The Profaci Bros now run Colavita Olive Oil in N.J.