FWIW, and to show I'm not sulking (Bart!!

BTW, I was so mad, I rearranged everything ...) ...
FWIW, the crank out windshield on my '39 (same basic cab design, same windshield design as your COE), after all new rubber everything, did not leak as I recall ... Billy Marlow's '46 has been in the rain a time or 10, maybe he's following along and can answer...