A quartet of politicians—Rep. Carolyn Maloney, Councilmen Daniel Garodnick and Ben Kallos, and Assemblyman Dan Quart—held a press conference Wednesday to warn of five issues that could postpone completion of the first phase of the new subway line. In ascending order of worry, they listed the 69th Street entrance to the 72nd Street station, track installation, electrical work, the project's budget, and—their top concern—the 86th Street entrance.