What Carl said. A longer arm on the motor will increase the wiper stroke angle. Pretty easy fix. You might even consider building an adjustable length arm so you can fine-tune the stroke.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.