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5/13/19: To my surprise my wiper motor has been returned from “Ficken Wiper Service” this morning. They drilled out the pot metal control arm pivot and installed a new pin. Unfortunately, I did not take a picture of the fix, but I was impressed with their work.

I removed the radio grill to gain better access then reinstalled the vacuum wiper motor, the arms and spring clips that secure the linkage arms to the motor. I hooked up the vacuum line to the intake on the intake manifold, then installed my new wiper arms and blades. The way I accomplished the blade alignment was to place the wiper motor drive lever in a vertical position, then install the wiper arms in a vertical position. This gives you a starting point for alignment. I started the engine and gave it a try. One blade was perfect and the other I removed and realigned. Much closer this time but I could not get the the blades to align with each other. I remembered the vacuum motor was slotted and a small adjustment may be possible by loosening the wiper motor mounting screws and sliding it one direction or the other. That worked like a charm. The wiper blades are now perfectly aligned. After reinstallation of the radio grill, the job was done. Yea! Another success!