Intake design for stock appearing class and needed a winter project

Didn’t do a cranking compression test! DOH! I did notice something funny. It was NOT leaking water. It is off and on close inspection the four corners were definitely sealed. However there is surface rust over the entire interior surface of the new intake. After thinking about it, there is only very minimal metal to metal contact between the original casting and the new intake. Where the “new” intake flanges are inset is the only metal to metal contact. Every other area has about 1/8” of epoxy between the two pieces. Also the bottom is covered in epoxy. After running it to the point that the oil pressure came down to the normal 30 lbs at idle and it being at operating temp for a good bit. The new intake floor was only about 10-20 degrees above ambient temp? I think it would be hard pressed to get it over 100 degrees! I ask some B and R/B guys dry intake guys if they run metal gaskets which would help put some heat in the intake. Only 1 used a composite gasket, that might insulate the intake. I think whatever water vapor enters is condensing on the cool intake. The rust does not extend into the head port. I warmed the car up at the track like normal, until the oil pressure comes down as the oil heats.