Broke Tim,
Depending what is going on with your windshield crank out, you might be able to do it yourself. I had to submerge mine in a penetrating oil for a good month for it to even turn. Through out the month, I would turn it just enough both ways so that it will extend and retract. Now it is good to go.
If you need to have it rebuilt; Tech Tips have a pretty good write up.
Rebuild the windshield crank for your 1939 to 1946 truck If you go with a vender, don't forget American Classic Truck Parts that is to the left of the page and Bowtie Bits.
Bread
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