Throttle body/intake manifold help! Gap around gasket

[Lsvhatch]

Ok so im doing a turbo build and am using a 70mm bbk intake manifold with a 68mm omni throttle body but no matter what i do i have a spot around the gasket that cause a vacuum leak. I tried 3 diff 70mm gaskets and have the same problem with all 3. Anyone kno any fixes for this?

[Lsvhatch]

Nobodys had this problem?

[LS/Vtec]

You probably need a 70mm throttle body. I had a similar probem running a smaller throttle body on a skunk2 mani bored out to 70mm and it was leaking inbetween the gasket/throttle body.