So I found out what happens when you don't use sealer with the plenum gasket when installing the aluminum plate. At least I could see it through the throttle body, didn't have to do much head scratching when oil consumption went through the roof.
Yep, Right Stuff is one of my favorite go-to sealants/adhesives. Some others, too, depending on what I'm doing. The gasket was new (bought the whole gasket set, bolts and all), but I made the plate. I thought the surface finish might have been a bit too smooth, so I scuffed up the mating surface a bit this time.