Manifold to turbo gasket
 

I have a 95, with a built 1.8, Kraken low mount manifold, EFR 6758, and inconel studs with stage 8 locking hardware. I'm at Sonoma, running low boost, 10-12psi and I blew out my manifold to turbo gasket.

Is there anything else I am missing to prevent this from happening? Is there a specific brand of gasket should buy?

Thanks in advance.
https://cimg2.ibsrv.net/gimg/www.mia...c92fc9b39d.jpg

Sand both flanges flat.
Good and flat.
Smear with grease.
Cinch hardware.
Done.

Thank you.
Would machining be overkill?

If you have a mill and the skill, not entirely.
A tabletop belt sander or a file and patience works fine.

Just for clarification, after making sure both surfaces are flat, I should use a thin layer of grease instead of a gasket?
If so, will any kind of grease work or will I need something specific like copper or high temp synthetic?