By this time, the FBI had cultivated new informants and learned part of the reason the Ravenite bug failed was that Gotti would hold sensitive conversations in a rear hallway in the building the club occupied or in an apartment in its upper floors where a friendly widow of a Gambino soldier lived, and by November 1989, both locations were bugged. The apartment bug was particularly fruitful due to Gotti's frankness as he discussed his position as family boss in meetings there. In a December 12 conversation with Frank Locascio, Gotti plainly acknowledged ordering the murders of DiBernardo and Liborio Milito — the latter being one of Gravano's partners killed for insubordination. He also announced his intention to kill soldier Louis DiBono, who had ignored a summons to meet with Gotti to discuss his mismanagement of a drywall business he held with Gotti and Gravano. The FBI, however, misheard the namedrop and failed to warn DiBono, who was killed on October 4, 1990. In another taped meeting on January 4, 1990, Gotti promoted Gravano to underboss, preferring Gravano to lead the family if he was convicted in the assault case.