new eddy intake is junk!

Problems like this are not unusual. You have a block made by one company, heads by another, and an intake by another still. All part of building an engine, you have to make the parts fit together.
This

I just bought a RPM as well for my new build that will be ported, and milled for the new build (0 deck 383)

I should add I am not going to run the thin valley pan, I bought the 440 source valley pan for a RPM intake so I only need to run 2 intake gaskets

Since it's temporary I'd double stack and silicone gaskets and run it til the new motor is done