Hi Phil,
I did say I'd get back to you!
I had a search through the forum and I found this It relates to an AD window but the same principal applys to the '46.
Scroll down 'till you see my post and have a read. If your back glass is laminated,don't be too heavy handed with it or.... dang
Feel free to PM me if you have any further querys.
Jock.

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.