so the other day, as i wasnt used to drive my car for a while (was driving a new astra) i took a round about a lil too fast and smacked into the gutter. I bent some rod may be called pinnon or something i have no idea, it just joins up to brackets and then goes up the car its not the diff! (i think) ... anyways! after fixing all, that i noticed my fuel tank had a huge wet spot underneath it and a dent and harsh scratch's on the bottom. The leak seemed to have come from the side. I dont think it leaks terribly just drips slowly but still dont want to have it around.... so how can i fix it? and can i do it myself? any help is appreciated