Why not try to straighten the creases out. Work them from the back side a little at a time.
If you decide to use filler, use one that is waterproof.


Wayne
1938 1-Ton Farm Truck
Stovebolt Gallery Forums
1989 Silverado
1996 Mustang GT convertible
When I die, I hope she doesn't sell everything for what I told her I paid for it!