>Maybe someone once replaced your wiper *arms* with too-long ones? maybe
>from a later year bus??
>
>Actually, I guess I don't know how long the original blades were in 1971.
>But 16" ones seem fine now, on mine. They don't hit the rubber trim at the 
>top, etc.
>
>Now if I just had about 10 degrees more rotation of the arms when running...
>
The whole blade assembly is most assuredly not original on mine.  The 
drivers side hits the windshield seal, and the antenna :-(.  The arms look 
like the right ones.  Thanks.