1930 Coupe Wiper Motor
 

I have a 1930 Coupe, with an original Trico vacuum motor with the two screws on the small cover. The wiper motor shaft hits the outside frame surface, and appears that 1/2" spacers between the windshield frame and the wiper motor mounting arms would separate the unit properly and give space for the arm to swing. Otherwise, the motor fits all the holes in the windshield frame.
Is there a supply source for the spacers and associated gaskets needed to rebuild this motor and mount it on the frame?