I'm trying to install a new fuel pump onto a 1967 440 and the pump will not go all of the way into the engine. It seems the pump lever or arm is too straight or too long putting the pump on a steep angle when the arm is under the pushrod and, the bolt holes don't line up. The pushrod inside the engine is all of the way up. The parts store confirmed that the part number is correct. Is there more than one pump for a 440? Here's a photo of the new pump and lever.