Doug, not questioning your decision, but I considered buying new vent window assemblies till I saw the price. big_eek
I found another used pair and between the two sets, managed to rebuild one set to good shape. Jerry Kassis' videos were very helpful. Here and Here.

Kevin
1951 Chevy 3100 work truck
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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.