The hot air gun technique works pretty well (just don't melt your seals! dang) and a good fresh razor blade.
As the other guys have said,decent glass cleaner and razor takes care of any residue.
As Alan said the old gum stinks! big_eek


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.