OK, Im dealing with a tiny pinhole leak on a line going from tank to engine. The leak is close to the tank and i dont think it has very much pressure, I was thinking of cleaning, then roughing the surface and adding a dab of jb and cover with a cu peace of copper tube with seam at opposite side of course, then hose clamp the bajeebies out of it as it dries. does anyone think this will be an effective fix?