[TerryW]

Hey guys, 
 
I lost my driver’s side windshield wiper idler arm nut along the highway in the rain. When I stopped to remove the drinker’s side and switch it to the driver’s side I (of course) lost that one in the rain-soaked parking lot. These nuts are the shouldered type and appear to have vanished from the face of the earth, unobtanium???. 
 
So... my question is, where can a fella find parts for these old air wipers. I really don't need to replace the arms but I could if that’s the only/best way. I really don't need to replace the pivot plates either but again, if that's the best way then I'll do that too. but how would I know what arms and pivot plates would work with the old air motor shaft? 

I've been through the post here and all the Ambus and Amequipment etc websites but I don't see any parts for the older air powered stuff. I can't believe I'm the only one who's come up against this.

Any thoughts would be appreciated