ya I don't believe it is the intake manifold. There are no cracks in it anywhere. I truly believe the problem was in the spacer. I must have over tightend my edelbrock carburetor on top of the spacer and warped it. Hopefully it didn't d o any damage to my quick fuel. I wouldn't think so since I have never tightend the carburetor nuts tighter then what quick fuels spec is which is 8 ft lbs. And it hasn't had a whole lot of miles put on it. I'm pulling the carburetor off here in about an hour. and i'll check it out.