You might be able to use a small amount of body putty to cover the pin holes. However, I would be sure your shielding gas is working correctly.

Once you have the panels welded and sanded down, there should not be any holes. As far as sealing... seal it as you would any bare metal.

Good-Luck,
Dale



When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
-Unknown-