v. Holiday Tours, Inc., 559 F.2d 841, 843 (D.C.Cir.1977)). %These factors interrelate on a sliding scale and must be balanced against each other.cd Serrano Laboratories, Inc. v. Shalala, 158 F.3d 1313, 1318 (D.C.Cir.1998). %If the arguments for one factor are particularly strong, an injunction may issue even if the