318 2bbl won't idle without choke

So, I tested the floats again. They're brass floats - I put them underwater and turned them every which way. No bubbles and no sloshing when I shook them, so I'm sure they're fine. I took the needle and seat out and cleaned them again. Both look good with the little rubber tip intact and free of debris. Float is set to 1/4". Got a fuel gauge and checked my fuel pressure, and it's 6psi.

Gas still comes out the throttle shaft and drips from the venturis. I'm running out of ideas!