Has anyone ever successfully welded a crack in the exhaust manifold assy. at gasket. The pipe cracked around the hole stud (three holes have bolts inserted, one has a mounted stud and gasket fits under, it's the mounted stud bolt water leaking at bolt with nut)also called the tune pipe p ..... crack is inside the water port and on top of the flange.... looking for one everywhere ! is this worth trying to spend money on having it welded? :ack: