Ed,
I have been trying to heat my Offy on a 230 for a month now. Each time it ran for about 5 minutes and then leaked like a sieve! I kept working with different gasket material hoping to cure. When I took the manifold off last night, I found two plugs with little holes in them on the bottom. Is that what you're talking about? If it is, I sure could use some plugs! I'd be glad to pay for them.

Thanks,
Bob Dale
631 Forest Park Drive
Newburgh, IN 47630