NYM, I found this about the Silvers hit, tell me what you think:

Gambino members Joseph Indelicato and Thomas Altamura also allegedly murdered a swindler named Louis Silvers at the Blue Bay motel in Miami. Silvers was allegedly murdered on the orders of Gambino captain Carmine Lombardozzi after he stole money from the organization. Indelicato and Altamura got away with the Silvers murder after allegedly paying the district attorney a $40,000 bribe.

Also, you named Altamura as an associate of the Trafficante Family, when he was an official member of the Gambinos, right? I'm sure he was associated with the Trafficante guys as well, but I think his official membership of another Family is more notable.