While I've got my radiator out I inspected the streetside exhaust manifold and it sure looks suspicious and sounds really thin when I tap on it. I called Luke for a replacement. He has no pull offs but priced a new one from DD and it is near $500 plus a couple of weeks to get it.
I could continue with the old one. It may last for years, but who knows? It may fail next trip. Anyone got any ideas on a different source? It may be worth some phone calls.
David