That is caused by the springs in the top door hinges being either broken or very weak. That crease is a badge of honor on AD trucks. LOTS of them have it. The wind catches the door and the fat lady starts a singin!


Deve

1950 Chevy 3100 Deluxe Cab
1950 Chevy 3100 Standard Cab
In the Stovebolt Gallery
The Think Tank
More info and tips at Deve's Technet