Not on that particular area, but I have used the flea market repair rods for aluminum/pot metal to repair the pot metal fender extensions on a Fairlane. It had some cracks in it, and they have not re-appeared in the three years since completion (kow) You do have to watch the heat, it is a very fine line between melting enough to add the filler rod and a dime sized hole just dropped out. The finer your torch size the better...
