An assembly for positioning variable vanes of a gas turbine engine, comprising: a block housing arranged to be disposed on a case of the gas turbine engine; a main bell crank pivotally supported by the block housing, the main bell crank extending between a main bell crank first end and a main bell crank second end that is connected to an actuator; a bell crank extending between a bell crank first end and a bell crank second end that is pivotally supported by the block housing; and a sync rod connected to the main bell crank first end and the bell crank first end, the sync rod having a first side, a second side disposed opposite the first side, a first face and a second face disposed opposite the first face, each face extending between the first side and the second side, wherein: the bell crank first end includes a bell crank first arm, a bell crank second arm, and a bell crank end wall extending between the bell crank first arm and the bell crank second arm; the sync rod defines a mounting hole that extends from the first face towards the second face; and at least one of the bell crank first arm and the bell crank second arm defines an opening, the bell crank opening being arranged to receive a fastener that extends through the bell crank first arm, the sync rod, and the bell crank second arm to couple the sync rod to the bell crank, the assembly characterized by: the sync rod defining a first tab disposed proximate the first side and extending beyond at least one of the first face and the second face; the first tab is arranged to abut an end surface of at least one of the bell crank first arm and the bell crank second arm; the end surface of at least one of the bell crank first arm and the bell crank second arm defines a perturbation; and wherein engagement between the perturbation and the first tab inhibits the mounting hole from being disposed coaxial with the opening. a block housing arranged to be disposed on a case of the gas turbine engine; a main bell crank pivotally supported by the block housing, the main bell crank extending between a main bell crank first end and a main bell crank second end that is connected to an actuator; a bell crank extending between a bell crank first end and a bell crank second end that is pivotally supported by the block housing; and a sync rod connected to the main bell crank first end and the bell crank first end, the sync rod having a first side, a second side disposed opposite the first side, a first face and a second face disposed opposite the first face, each face extending between the first side and the second side, wherein: the bell crank first end includes a bell crank first arm, a bell crank second arm, and a bell crank end wall extending between the bell crank first arm and the bell crank second arm; the sync rod defines a mounting hole that extends from the first face towards the second face; and at least one of the bell crank first arm and the bell crank second arm defines an opening, the bell crank opening being arranged to receive a fastener that extends through the bell crank first arm, the sync rod, and the bell crank second arm to couple the sync rod to the bell crank, the assembly characterized by: the sync rod defining a first tab disposed proximate the first side and extending beyond at least one of the first face and the second face; the first tab is arranged to abut an end surface of at least one of the bell crank first arm and the bell crank second arm; the end surface of at least one of the bell crank first arm and the bell crank second arm defines a perturbation; and wherein engagement between the perturbation and the first tab inhibits the mounting hole from being disposed coaxial with the opening. the bell crank first end includes a bell crank first arm, a bell crank second arm, and a bell crank end wall extending between the bell crank first arm and the bell crank second arm; the sync rod defines a mounting hole that extends from the first face towards the second face; and at least one of the bell crank first arm and the bell crank second arm defines an opening, the bell crank opening being arranged to receive a fastener that extends through the bell crank first arm, the sync rod, and the bell crank second arm to couple the sync rod to the bell crank, the assembly characterized by: the sync rod defining a first tab disposed proximate the first side and extending beyond at least one of the first face and the second face; the first tab is arranged to abut an end surface of at least one of the bell crank first arm and the bell crank second arm; the end surface of at least one of the bell crank first arm and the bell crank second arm defines a perturbation; and wherein engagement between the perturbation and the first tab inhibits the mounting hole from being disposed coaxial with the opening. the sync rod defining a first tab disposed proximate the first side and extending beyond at least one of the first face and the second face; the first tab is arranged to abut an end surface of at least one of the bell crank first arm and the bell crank second arm; the end surface of at least one of the bell crank first arm and the bell crank second arm defines a perturbation; and wherein engagement between the perturbation and the first tab inhibits the mounting hole from being disposed coaxial with the opening.