Intake manifold pulling oil

Screamin demon72 said

How are you guys getting a feeler gauge at the bottom of the intake? Are you gauging it at the front bottom around the coolant passage? Wasn’t sure where to try it

I will try the solder trick also, do I torque it down with gaskets installed? Or leave them off and try?

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Leave them off, and yes - at the front/rear near the water ports. If it's consistent, then it'll show up there pretty well. You can also place the manifold on the engine futher forward or back and get under the manifold to check a little deeper.
The solder trick will get you a better representation. I would lay a strip near the two inner ports on either side - 4 strips of solder - and then torque it per usual. You can visually tell if there's a taper by the squish mark. If the squish is tapered, it doesn't really matter what it measures because the interface is tapered. Getting a good measurement though will help tell the machine shop where and how much to cut.

Hermetically Sealed: How To Check Intake Manifold Seal