hood to fender gap

[cougman67]

Hello all, I have a panel gap question for everyone here. I am working on a 1979 GMC shortbox. I have jobber fenders and doors with the original hood. I am trying to keep the panel gaps close to 3/16" on the doors, fenders and hood. The front of the fenders are at a fixed width and there is no possibility to get it anywhere close to 3/16" gap. It is closer to 1/4" or more, depending on how hard I try. The questions are:

1. What do people do to reduce the gap?
2. What is the original gap on these trucks? From the pictures I see, it is more than what I would expect. This might be normal to account for the hood hinge design. My original pictures show there was a pretty big gap on them but I did not measure it.

Any help would be appreciated.

Patrick