[MrMagoo]

Thanks Sal. I didn't know about the new needles and seats. Is there an optimal pressure? is 8 better than 6.5 on a carb that can handle it?

I'm going to dig out that book, I don't want to misquote it, but I believe the author was stating that there is positive atmospheric pressure in the world inside the air filter created by the air rushing down into the manifold. Something about the Venturi Effect.