T.I. must wait another six weeks before trying to convince a judge to throw out key evidence obtained against him in October when he was arrested on federal firearms charges. U.S. Magistrate Alan Baverman postponed a suppression hearing, initially scheduled for Thursday, until Feb. 19. T.I., whose real name is Clifford Harris Jr., was arrested Oct. 13, just hours before the BET Hip-Hop Awards ceremony in Atlanta for allegedly trying to buy machine guns and silencers in a Midtown parking lot.