Dale:
Yes the rivet is the one at "A" When I held the distributor cap and rotated it there was a degree or two of rotation before the link to the vacuum cylinder began to move. I'm kinda surprised that the rivet and the bracket to the distributor base are not hardened in that area. It seems there is a lot of ware as this area rotates slightly every time the vacuum advance moves, and that happens every time the gas pedal is moved in either direction. It is also the only thing that holds the distributer in place.
