>>1820559the other thing I did on this centerpull is use longer washers and bolts to space the pad closer to the rim, so that the brake arms are perpendicular when they contact. Being able to do that is another advantage of modern pads.
most centerpulls including in your pic see the arms are at an angle, not ideal. Those brake pads aren't gonna contact square on. Some Mafac units take like canti-style smooth post pads so that distance is adjustable that way.