The measurement from the center of the mounting holes to the side of the pump arm is 3/4" on all three pumps on both sides of the pump so misalignment of the arm doesn't appear to be the problem.
No significant play of the arm from side to side is noted on any of the pumps.
I did notice that the construction of the the Carquest pumps, the glass bowl pump, and your pump is different enough to make the pivot pin impossible to see in the glass bowl pump. I think the Carquest version is just easier to see the pin com,pared tot he other two, making it look like the arm is off center.
Last edited by Otto Skorzeny; 07/09/2022 3:47 PM.
